Li Chun-feng of the Tang dynasty a celestial globe to assist in the observation of the stars in 633 AD with three spherical layers to calibrate multiple aspects of astronomical observations.
Erin Brokovich claimed to have performed 634 sexual favors in five days.
She’s really quite tired.
The Yashica 635 camera
The Battle Of The Yarmuk took place in 636.
          637
  factors neatly into 7 * 13 * 7
          638
  like 637, this also has 3 prime factors
  2 * 11 * 29
          639
  neatly factors into 3 * 71 * 3
          639
  639 is also the sum of the first 20 prime numbers
  2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67 and 71
#6-40 IS a thread size… not a very normal one, but …
          640
  factors into 2222222*5
Directions from Ohio’s Dayton International Airport to Wright-Patterson Air Force Base’s Building 642
64.3 degrees west longitude and 64.4 degrees south latitude is Palmer Station on Anvers Island on the Antarctic Peninsula.
KODAK PROFESSIONAL
DCS Pro Back 645 digital camera
ISO-646, the first attempt to internationalize the 7bit ASCII code
          647
  if you hold down the “ALT” key and at the same time type 647 you will get this:    ç
  Actually, ALT 135 does the same thing but 647 just doesn’t seem to have many interesting properties.
          648
  648 is the sum of 2 consecutive prime numbers 317 & 331
  Also, 64 = 8²
Hickman is the 648th most popular surname in the United States.
          649
  649 is the product of two 2 digit prime numbers
  649 = 11 * 59