Properties of the Number 65808

Sixty-Five Thousand Eight Hundred Eight

Basics

Value: 65807 → 65808 → 65809

Parity: even

Prime: No

Previous Prime: 65789

Next Prime: 65809

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 ⁴ × 3 ² × 457

Divisors: 1, 2, 3, 4, 6, 8, 9, 12, 16, 18

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000000100010000

Octal: 200420

Duodecimal: 32100

Hexadecimal: 10110

Square: 4330692864

Square Root: 256.5306999171834

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

a(1) = 1, a(2n) = 16a(n), a(2n+1) = a(2n)+1. A33052

Expansion of 1/(2 - ∏_k>=1 (1 + x^2·k-1)). A307058

Expansion of 1/(2 - ∏_k>=1 1/(1 + x^k)). A307060

Row sums of triangle A131923. A131924

Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 326", based on the 5-celled von Neumann neighborhood. A281108

θ series of 8-d 6-modular lattice G₂ tensor F₄ (or A₂ tensor D₄) with det 1296 and minimal norm 4 in powers of q². A28977

Replace 2^k in binary expansion of n with 2^{2^k}. A358126

a(1)=1, then add 1 multiply by 2 to get a(2), subtract 1 and multiply by 3 to get a(3), add 1 and multiply by 4 to get a(4) and so on. A85110

a(n) is the sum of lattice points enumerated by the square number spiral falling on the circumference of circles centered at the origin of radii n. A309573

Square of n has a smaller square as its final digits. A65808