Properties of the Number 66564

Sixty-Six Thousand Five Hundred Sixty-Four

Basics

Value: 66563 → 66564 → 66565

Parity: even

Prime: No

Previous Prime: 66553

Next Prime: 66569

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ² × 43 ²

Divisors: 1, 2, 3, 4, 6, 9, 12, 18, 36, 43

Polygonal

Triangular: No

Square: Yes

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10000010000000100

Octal: 202004

Duodecimal: 32630

Hexadecimal: 10404

Square: 4430766096

Square Root: 258

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 squares of the product of three distinct primes. A162143

a(n) = (11·n + 5)². A17450

Squares with initial digit '6'. A45789

Primitive exponential abundant numbers: the powerful terms of A129575. A328136

a(n) = (6·n)². A16910

Denominator of 1/36 - 1/n². A61046

Numbers k such that the number of odd divisors of k is an odd divisor of k, and the number of even divisors of k is an even divisor of k. A181795

Squares composed of digits {4,5,6}. A30176

Squares when digits rotated right once remain square. A35126

Squares that are the sum of exactly three distinct powers of 2. A212190