Properties of the Number 68211

Sixty-Eight Thousand Two Hundred Eleven

Basics

Value: 68210 → 68211 → 68212

Parity: odd

Prime: No

Previous Prime: 68209

Next Prime: 68213

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 11 × 13 × 53

Divisors: 1, 3, 9, 11, 13, 33, 39, 53, 99, 117

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000101001110011

Octal: 205163

Duodecimal: 33583

Hexadecimal: 10a73

Square: 4652740521

Square Root: 261.17235688334245

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) = binomial(11·n+1,n)/(11·n+1). A230388

a(n) = floor(C(n,4)/5). A11795

a(n) = binomial(5*(n+1),4)/5, with n >= 0. A234043

Number of symmetric 11-ary factorizations of the n-cycle (1,2...n). A192893

Hexagonal spiral sequence: sequence is written as a hexagonal spiral around a 'dummy' center, each entry is the sum of the row in the previous direction containing the previous entry. A63178

Fermat coefficients. A970

Dying rabbits: a(n) = a(n-1) + a(n-2) - a(n-10). A23440

Values of A063178 on folding point positions of the spiral. A63253

Largest prime factor of Euler totient function φ(n). A68211