610

[Math.]  The 15th Fibonacci number.

 

[Math.]  The first Markov numbers are 1, 2, 5, 13, 29, 34, 89, 169, 194, 233, 433, 610, 985, 1325, 1597, 2897, 4181, 5741, 6466, 7561, 9077, 10946…

 

611

[Phone]  An NANPA/U.S. telephone area code reserves for special functions. This number cannot be used as area code.  

 

[Phone]  A 7-digit number after an NANPA/U.S. 3-digit area code cannot start with 0nm, 1nm or 8 other 3-digit numbers: 211, 311, 411, 511, 611, 711, 811 and 911.   (NANPA: North American Numbering Plan Administration).

 

[Tech.]  The “number system” code of an EAN-13 barcode for Morocco’s products.

 

612

[Math.]  Two consecutive sums of consecutive numbers: 64+65+…+71+72 = 73+74+…+79+80 = 612.

 

[Math.]  The square and cube of number 612 use different digits:

6122 = 374,544 and 6123 = 229,220,928.

 

[World]  The ISO country code for Pitcairn Island.

 

613

[Math.]  A prime number.

 

[Tech.]  The “number system” code of an EAN-13 barcode for Algeria’s products.

 

614...

 

615...

 

616

[World]  The ISO country code for Poland.

 

617

[Math.]  A prime number.

 

[Math.]  617 = 1!2+2!2+3!2+4!2.

 

618

[Math.]  618 = 0!2+1!2+2!2+3!2+4!2.

 

619

[Math.]  An alternating sum/subtraction of factorials: 619 = 6!–5!+4!–3!+2!–1!.

 

[Tech.]  The “number system” code of an EAN-13 barcode for Tunisia’s products.

 

610-619

[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 610-619 are for books in Medical Sciences and Experimental Medicine.