Properties of the Number 66539

Sixty-Six Thousand Five Hundred Thirty-Nine

Basics

Value: 66538 → 66539 → 66540

Parity: odd

Prime: No

Previous Prime: 66533

Next Prime: 66541

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 11 × 23 × 263

Divisors: 1, 11, 23, 253, 263, 2893, 6049, 66539

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000001111101011

Octal: 201753

Duodecimal: 3260B

Hexadecimal: 103eb

Square: 4427438521

Square Root: 257.95154583758557

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

a(n) = (12·n+1)*(12·n+11). A1538

Least k such that k*(2^p-1)*(k*(2^p-1)+1)+1 is prime, where 2^p-1 runs through the Mersenne primes. A137909

Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite PAR = Partheite Ca8[Al16Si16O60(OH)8].16H2O starting with a T3 atom. A19048

Difference between larger and smaller terms of n-th amicable pair. A66539

Lexicographically earliest subsequence of the Fibonacci numbers (cf. A000045), such that gcd(a(n-2), a(n)) > 1 and gcd(a(n-1), a(n)) = 1. A251608