Properties of the Number 65806

Sixty-Five Thousand Eight Hundred Six

Basics

Value: 65805 → 65806 → 65807

Parity: even

Prime: No

Previous Prime: 65789

Next Prime: 65809

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 × 13 × 2531

Divisors: 1, 2, 13, 26, 2531, 5062, 32903, 65806

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 10000000100001110

Octal: 200416

Duodecimal: 320BA

Hexadecimal: 1010e

Square: 4330429636

Square Root: 256.52680171865086

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(n) = (n⁵ - 5·n⁴ + 5·n³ + 5·n² + 114·n + 120)/120. A161701

G.f. A(x) satisfies A(x) = 1 / ((1 + x) * (1 - x * (1 + x + x²) * A(x³))). A367717

Numbers whose base-16 representation has exactly 5 runs. A43678

A pseudo-random sequence. A65806