Properties of the Number 66081

Sixty-Six Thousand Eighty-One

Basics

Value: 66080 → 66081 → 66082

Parity: odd

Prime: No

Previous Prime: 66071

Next Prime: 66083

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 22027

Divisors: 1, 3, 22027, 66081

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000001000100001

Octal: 201041

Duodecimal: 322A9

Hexadecimal: 10221

Square: 4366698561

Square Root: 257.0622492704831

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

Antidiagonal sums in A101321. A101338

a(n) = 2ⁿ + 2·n² + 2·n + 1. A321123

a(n) = smallest m such that m+2^j and m-2^j are prime for all 0 < j <= n. A66081