Properties of the Number 66649

Sixty-Six Thousand Six Hundred Forty-Nine

Basics

Value: 66648 → 66649 → 66650

Parity: odd

Prime: No

Previous Prime: 66643

Next Prime: 66653

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 11 × 73 × 83

Divisors: 1, 11, 73, 83, 803, 913, 6059, 66649

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000010001011001

Octal: 202131

Duodecimal: 326A1

Hexadecimal: 10459

Square: 4442089201

Square Root: 258.16467612746715

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

Number of rooted toroidal maps with 2 faces and n vertices and without separating cycles or isthmuses. A6422

Numbers·such that σ(x) + σ(R(x)) = σ(x + R(x)), where R(x) is the digit reversal of·and σ(x) is the sum of the divisors of x. A246487

a(n+1) = a(n-1) + 2 a(n-2) - a(n-4) ; a(0)=1, a(n)=0 for 0 < n < 5. A181560

Primes of the form a² + b³ with a, b > 0. A66649