Properties of the Number 66526

Sixty-Six Thousand Five Hundred Twenty-Six

Basics

Value: 66525 → 66526 → 66527

Parity: even

Prime: No

Previous Prime: 66523

Next Prime: 66529

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 × 29 × 31 × 37

Divisors: 1, 2, 29, 31, 37, 58, 62, 74, 899, 1073

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000001111011110

Octal: 201736

Duodecimal: 325BA

Hexadecimal: 103de

Square: 4425708676

Square Root: 257.9263460757741

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

Tetranacci numbers: a(n) = a(n-1) + a(n-2) + a(n-3) + a(n-4) with a(0) = a(1) = a(2) = a(3) = 1. A288

Numbers n such that there is k < n for which A003557(k) = A003557(n), A048250(k) = A048250(n) and A173557(k) = A173557(n). A296087

Numerator of binomial(6·n-2,2·n)/(2·binomial(4·n-1,2·n)). A109074

a(n) = binomial(Fibonacci(n), Fibonacci(n-1)). A66526

Denominator of binomial(6·n-2,2·n)/(2·binomial(4·n-1,2·n)). A134357