Properties of the Number 81708

Eighty-One Thousand Seven Hundred Eight

Basics

Value: 81707 → 81708 → 81709

Parity: even

Prime: No

Previous Prime: 81707

Next Prime: 81727

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 ² × 3 × 11 × 619

Divisors: 1, 2, 3, 4, 6, 11, 12, 22, 33, 44

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011111100101100

Octal: 237454

Duodecimal: 3B350

Hexadecimal: 13f2c

Square: 6676197264

Square Root: 285.84611244514065

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

Number of ways to choose a partition of each part of a strict composition of n. A336342

Triangle read by rows: Number of walks from (0,0) to (3n,3k) on the square lattice with up and right steps where squares (x,y)=(1,1) mod 3 or (x,y)=(2,2) mod 3 are not entered. A348595

Matrix square of triangle V = A136230, read by rows. A136234

Number of -n..n arrays x(0..3) of 4 elements with zero sum and elements alternately strictly increasing and strictly decreasing. A200058

Triangle T(n,m) by rows: The number of tatami tilings of a 3 by n grid with dimers and m monomers. A272472

a(n) = a(n-1) + 64·a(n-2) starting with a(0) = 2 and a(1) = 1. A81708