Properties of the Number 68508

Sixty-Eight Thousand Five Hundred Eight

Basics

Value: 68507 → 68508 → 68509

Parity: even

Prime: No

Previous Prime: 68507

Next Prime: 68521

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ² × 11 × 173

Divisors: 1, 2, 3, 4, 6, 9, 11, 12, 18, 22

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 10000101110011100

Octal: 205634

Duodecimal: 33790

Hexadecimal: 10b9c

Square: 4693346064

Square Root: 261.74032933424684

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

T(n,k) is the number of (n+1) X (k+1) 0..2 arrays with rows and columns of permanents of all 2 X 2 subblocks lexicographically nondecreasing. A205063

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the permanents of 2X2 subblocks nondecreasing rightwards and downwards. A205206

Number of (n+1)X2 0..2 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing. A205057

Number of (n+1) X 6 0..2 arrays with the permanents of 2 X 2 subblocks nondecreasing rightwards and downwards. A205203

Number of (n+1)X6 0..2 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing. A205061

Expansion of e.g.f. (1 + x)²*BesselI(0,2·log(1 + x)). A317310

a(n) = round((a(n-1) + a(n-2))/a(n-3)) starting with a(1)=a(2)=a(3)=1. A68508