This nBAB for the number

647was created to test the modifiedSexy Primeschecking performed by the MBNA.This nBAB was created along with nBABs for 641, 653, and 659.

MathBabbler Number Analyst (MBNA) output: ========================================= 647 is a natural, whole, integer 647 is odd 647 proper divisors are: 1, 647 has 1 proper divisors 647 is deficient (sum of divisors is 1; ratio: 0.0015456) 647 is unhappy 647 is a Squarefree Number 647 is prime (not composite) ...Cousin prime with 643 ...Sexy prime with 641 ...Sexy prime with 653 ...Sexy Triplet prime with 641, 653 ...Sexy Quadruple prime with 641, 653, 659 ...Truman Gerald prime with 677 ...Truman Gerald prime with 617 ...OEIS:002145 (4n+3; n=161) ...Left-truncatable ...Eisenstein ...prime triplet {641, 643, 647} 647 is Arithmetic (A003601) 647 is the sum of 5 consecutive primes 647 = 113 + 127 + 131 + 137 + 139 647 in octal is 01207 647 in hexadecimal is 0x287 647 in binary is 1010000111 (is odious) 647 nearest square numbers: -22...29 (625...676 [26]) sqrt(647) = 25.4362 ln(647) = 6.47235 log(647) = 2.8109 647 reciprocal is .00154559505409582689335394126738 647 is an apocalyptic power 647! is 2.95895e+1539 647 is 205.946 Pi years 647 is 32 score and 7 years 647 written as a Roman numeral is DCXLVII 647 is 324^2 - 323^2 and 324 + 323 = 647

**Creator:** Gerald Thurman
[gthurman@gmail.com]

**Created:** 24 September 2015

This work is licensed under a Creative Commons Attribution 3.0 United States License.