Properties of the Number 71690

Seventy-One Thousand Six Hundred Ninety

Basics

Value: 71689 → 71690 → 71691

Parity: even

Prime: No

Previous Prime: 71671

Next Prime: 71693

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 × 5 × 67 × 107

Divisors: 1, 2, 5, 10, 67, 107, 134, 214, 335, 535

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001100000001010

Octal: 214012

Duodecimal: 355A2

Hexadecimal: 1180a

Square: 5139456100

Square Root: 267.74988328662255

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

Expansion of ∏_k>=1 (1 - x^k/(1 - x)). A307599

Main diagonal of table A083050. A83052

a(n) is the smallest positive integer which can be represented as the sum of distinct nonzero dodecahedral numbers in exactly n ways, or -1 if no such integer exists. A360216

Number of ways to write n as n = x·y*z·t/(x+y+z+t) with 1 <= x <= y <= z <= t <= n. A71690