Properties of the Number 66601

Sixty-Six Thousand Six Hundred One

Basics

Value: 66600 → 66601 → 66602

Parity: odd

Prime: Yes

Previous Prime: 66593

Next Prime: 66617

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 66601

Divisors: 1, 66601

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000010000101001

Octal: 202051

Duodecimal: 32661

Hexadecimal: 10429

Square: 4435693201

Square Root: 258.07169546465184

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

First member of a prime 5-tuple in a 2p-1 progression. A57328

First member of a prime quadruple in a 2p-1 progression. A57327

Beastly primes (version 2): primes containing 666 as a substring. A131645

Beastly primes (version 1): either 666 followed by 0's and a 1 or 7 at the right end or a palindrome with 666 in the center, 0's surrounding these digits, and 1 or 7 at both ends. A186086

Primes having only {0, 1, 6} as digits. A199326

Primes of the form 3·m² - 2. A201715

Number of subsets of the first n numbers having a common divisor greater than 1. A109511

Triangle of primes associated with A083773. A83775

a(n) = 74·n² + 1. A158742

1/9 the number of (n+1) X 9 0..2 arrays with all 2 X 2 subblocks having the same four values. A184047