Properties of the Number 66215

Sixty-Six Thousand Two Hundred Fifteen

Basics

Value: 66214 → 66215 → 66216

Parity: odd

Prime: No

Previous Prime: 66191

Next Prime: 66221

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 5 × 17 × 19 × 41

Divisors: 1, 5, 17, 19, 41, 85, 95, 205, 323, 697

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000001010100111

Octal: 201247

Duodecimal: 3239B

Hexadecimal: 102a7

Square: 4384426225

Square Root: 257.3227545321245

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 n such that (i) the sum of the distinct primes dividing n is divisible by the largest prime dividing n and (ii) n has exactly 4 distinct prime factors and (iii) n is squarefree. A71143

Number of binary arrays indicating the locations of trailing edge maxima of a random length-n 0..6 array extended with zeros and convolved with 1,2,2,1. A222109

Numbers which are sums of cubes of some subset of divisors. A66215