650

[Math.]  A pyramidal number (sum of all squares of integers from 1 to 12): 650 = 12+22+…+112+122.

 

[Tech.]  A recordable CD-R or rewritable CD-RW has memory capacity of 700MB/80-minute recording or 650MB/74-minute recording.

 

[Tech.]  BMW (Bayerische Motoren Werke) cars’ numbered models currently: 325 (328, 323), 330, 525, 530, 650, 750 and 760.

 

651

[Math.]  101,556 = 372×273 = 651×156. 

 

652

[Math.]  The transcendental number (i.e., not a root of any polynomial equation with integer coefficients):  

 e^(p´6521/2= 68,925,893,036,109,279,891,085,639,286,943,768.0000000001 

is extremely close to the integer 68,925,893,036,109,279,891,085,639,286,943,768.

 

653

[Math.]  A prime number.

 

654

[Math.]  Sum 327+654 = 981 is one of only 4 cases that the equality: n+2n = 3n use each of 9 digits 1-9 once: n = 192, 219, 273 and 327.

 

[World]  The ISO country code for St. Helena. (ISO-3166)

 

655

[Math.]

(121+878 = 999 = 101+898)

1212 = 014,641 & 014+641 = 655

8782 = 770,884 & 770+884 = 1654 and 1+654 = 655.

and

1012 = 010,201 & 010+201 = 211

8982 = 806,404 & 806+404 = 1210 and 1+210 = 211.

 

656

[Biology]  The number of muscles in the human body varies from about 656 to 850. (To be checked).

 

[Math.]   (343+656 = 999 = 323+676)

3432 = 117,649 & 117+649 = 766

6562 = 430,336 & 430+336 = 766

3232 = 104,329 & 104+329 = 433

6762 = 456,976 & 456+976 = 1432 and 1+432 = 433.

 

657

[Math.]  6572 = 431,649= (4+3+1+649)2.

 

[Math.]  Sum 219+438 = 657 is one of only 4 cases that the equality: n+2n = 3n use each of 9 digits 1-9 once: n = 192, 219, 273 and 327.

 

658

 

659

[Math.]  A prime number.

 

[World]  The ISO country code for St. Kitts and Nevis. (ISO-3166)

 

 650-659

[Library]  Numbers 600-699 are the first 3 digits in Dewey Decimal Classification System call numbers for library books in Applied Sciences and Technology (Medicine, Agriculture and Engineering…). Numbers 650-659 are for books in Management and Public Relations…