Properties of the Number 66217

Sixty-Six Thousand Two Hundred Seventeen

Basics

Value: 66216 → 66217 → 66218

Parity: odd

Prime: No

Previous Prime: 66191

Next Prime: 66221

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 23 × 2879

Divisors: 1, 23, 2879, 66217

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000001010101001

Octal: 201251

Duodecimal: 323A1

Hexadecimal: 102a9

Square: 4384691089

Square Root: 257.3266406729004

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

Numbers that are the sum of 8 positive 10th powers. A4808

Smallest number with "natural" logarithm n, cf. A061373. A182061

Semiprimes in A103378. A103398

Products (semiprimes) of two distinct double-safe primes. A157356

Values m that allow maximum period in the Blum-Blum-Shub x² mod m pseudorandom number generator. A338407

Numbers not ending in 0 which are the product of two substrings of themselves. The substrings may be equal, but each must be greater than 1. A66217