Properties of the Number 86580

Eighty-Six Thousand Five Hundred Eighty

Basics

Value: 86579 → 86580 → 86581

Parity: even

Prime: No

Previous Prime: 86579

Next Prime: 86587

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ² × 5 × 13 × 37

Divisors: 1, 2, 3, 4, 5, 6, 9, 10, 12, 13

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10101001000110100

Octal: 251064

Duodecimal: 42130

Hexadecimal: 15234

Square: 7496096400

Square Root: 294.24479604574145

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

Nearest integer to Bernoulli number B_2n. A2882

Irregular array read by rows: row n contains the continued fraction terms (in order) for the absolute value of B_n, the n-th Bernoulli number. A138701

Irregular array read by rows: row n contains the continued fraction terms (in order) for the absolute value of B_2n, the (2n)th Bernoulli number. A138704

Truncation of Bernoulli number: floor(|B_2n|) * sign(B_2n). A14509

Expansion of b(q)³ - 3·c(q)³ in powers of q where b(), c() are cubic AGM θ functions. A231961

a(n) = 4*(n - 1)*(16·n - 23) for n >= 1. A304378

Number of n X 6 0..1 arrays avoiding 0 0 0 and 1 1 1 horizontally and 0 0 1 and 1 0 1 vertically. A208377

a(n) = 9*(10ⁿ - 1). A86580

Number of 5-matchings of the n X n grid graph. A243217

Number of ways to place 5 nonattacking kings on an n X n cylindrical chessboard. A194653