Properties of the Number 66206

Sixty-Six Thousand Two Hundred Six

Basics

Value: 66205 → 66206 → 66207

Parity: even

Prime: No

Previous Prime: 66191

Next Prime: 66221

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 7 × 4729

Divisors: 1, 2, 7, 14, 4729, 9458, 33103, 66206

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000001010011110

Octal: 201236

Duodecimal: 32392

Hexadecimal: 1029e

Square: 4383234436

Square Root: 257.3052661723036

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

Expansion of ∑_k>0 x^2·k/(1-x^k)⁵. A363605

Expansion of ∑_k>0 x^2·k/(1+x^k)⁵. A363613

a(n) = ((2+sqrt(3))*(4+sqrt(3))ⁿ + (2-sqrt(3))*(4-sqrt(3))ⁿ)/2. A162274

a(n) = ∏_k=1..n prime(2k), where prime(k) is the k-th prime. A66206