Properties of the Number 71969

Seventy-One Thousand Nine Hundred Sixty-Nine

Basics

Value: 71968 → 71969 → 71970

Parity: odd

Prime: No

Previous Prime: 71963

Next Prime: 71971

Digit Sum: 32

Digital Root: 5

Palindrome: No

Factorization: 79 × 911

Divisors: 1, 79, 911, 71969

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001100100100001

Octal: 214441

Duodecimal: 35795

Hexadecimal: 11921

Square: 5179536961

Square Root: 268.2703859914471

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

Smallest number whose seventh power has at least n digits. A130081

Strong pseudoprimes to base 14. A20240

Strong pseudoprimes to base 65. A20291

a(n) = ∑_{k=0..floor(n/3)} (binomial(n+1, k)*binomial(2·n-3·k, n-3·k)/(n+1)). A71969