Properties of the Number 66544

Sixty-Six Thousand Five Hundred Forty-Four

Basics

Value: 66543 → 66544 → 66545

Parity: even

Prime: No

Previous Prime: 66541

Next Prime: 66553

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 ⁴ × 4159

Divisors: 1, 2, 4, 8, 16, 4159, 8318, 16636, 33272, 66544

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000001111110000

Octal: 201760

Duodecimal: 32614

Hexadecimal: 103f0

Square: 4428103936

Square Root: 257.96123739817966

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

Number of length n 1..(2+2) arrays with no leading partial sum equal to a prime. A254533

Number of n X 3 binary arrays with row sums nondecreasing and columns lexicographically nondecreasing. A267240

T(n,k)=Number of nXk binary arrays with row sums nondecreasing and columns lexicographically nondecreasing. A267245

Number of spanning trees in the line graph of the product of two star graphs, each of order n, L(S_n x S_n). A66544