Properties of the Number 66524

Sixty-Six Thousand Five Hundred Twenty-Four

Basics

Value: 66523 → 66524 → 66525

Parity: even

Prime: No

Previous Prime: 66523

Next Prime: 66529

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 ² × 16631

Divisors: 1, 2, 4, 16631, 33262, 66524

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000001111011100

Octal: 201734

Duodecimal: 325B8

Hexadecimal: 103dc

Square: 4425442576

Square Root: 257.922468970813

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

Numbers k such that k and k² use only the digits 2, 4, 5, 6 and 7. A137094

a(n) = smallest number with the property that the split-and-multiply technique (see A361338) in base n can produce all n single-digit numbers. A361340

Half the number of n X 4 binary arrays with no element unequal to a strict majority of its king-move neighbors. A183388

Numbers whose base-3 representation has exactly 11 runs. A43591

Number of trees with n edges equipped with a cyclic order on their edges, i.e., number of orbits of the action of Z/nZ on the set of edge-labeled trees of size n, given by cyclically permuting the labels. A157994

a(n) = n*(2ⁿ - 1). A66524