Air Canada Flight 621 crashed on takeoff on July 5, 1970 at Toronto International Airport (now Lester B. Pearson International Airport). All 109 passangers died.

No. 622 Squadron RAF was a bomber squadron of the Royal Air Force during the Second World War.

You can get the number 623 by multiplying 89 X 7!

The number 624 is the sum of a twin prime. A twin prime is a pair of prime numbers that differ by exactly 2 (e.g. 5 and 7) - in this case, the numbers are 311 and 313.

No.625 Squadron RAF was a heavy bomber squadron of the Royal Air Force during the Second World War.

626 was the experiment number of Stitch from the Lilo & Stitch films and television programs.

L.627 was a 1992 French police drama film, starring Didier Bezacew, Jean-Paul Comarte, and Charlotte Kady.

628 is the area code of the San Francisco area.

629 years ago today, Louis II of Flanders died.

In January 630CE, the prophet Muhammad lead an army of 10,000 men to conquer the city of Mecca in Saudi Arabia.

Flight EI 631 would bring me from Brussels to my home town of Dublin, Ireland, tomorrow morning. Wouldn't it be nice to be a passenger heading home for a few days?

USS Von Steuben (SSBN-632) was the second vessel in the United States Navy to be named after a Prussian baron who fought in the U.S. Revolutionary War.

633 Squadron is a 1964 British film starring Cliff Robertson and George Chakiris.

In 634 days from now the date will be Novmber 20, 2014.

BMW635 WooHoo!

Nice, Ren!

In the same vein, how about a Kawasaki 636?

637 is a slang expression or abbrevation for Always and Forever

a-l-w-a-y-s=6
a-n-d=3
f-o-r-e-v-e-r=7

638 Ways to Kill Castro was a British documentary that aired in 2005, looking at the CIA's numerous assassination plots of Cuban dictator Fidel Castro.

639 is the area code for the Canadian province of Saskatchewan.

Autoroute 640 in Quebec is a superhighway which runs for 34.1 miles from the North Shore Region to Charlemagne.

Ferrari 641
Hmm not really my bag but thought the number was neat for this thread!

Apparently there is a book called "642 Things to Write About" written by the San Francisco Writers' Group, published 11 April 2012. It is for sale at Amazon, but it doesn't look like it's available on Kindle.

The year 643 marks the death of Wei Zheng, Chinese chancellor of the Tang Dynasty.

644 years ago today, Pedro of Castile loses the Battle of Montiel to an alliance between the French and his half-brother Henry II.

I have a BMW 645.Believe it or not.

Fishers in northern Thailand netted a huge catfish in the Mekong River, nearly nine feet long and as big as a grizzly bear, it tipped the scales at 646 pounds

Hee! California penal code 647

648 Pippa is a minor planet orbiting the Sun

649 years ago today, King John II of France died and his son succeeded him as King Charles V.

The IBM 650 occupies a unique place in computer history as the earliest ancestor of the personal computer. Most computers that came before it were designed to expand the envelope of computing, and were usually bigger, faster, and offered more bells and whistles than their predecessors. Often they were designed for large government agencies with insatiable computing needs. The IBM 650, on the other hand was designed to be affordable and easy to use.