Properties of the Number 66445

Sixty-Six Thousand Four Hundred Forty-Five

Basics

Value: 66444 → 66445 → 66446

Parity: odd

Prime: No

Previous Prime: 66431

Next Prime: 66449

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 5 × 97 × 137

Divisors: 1, 5, 97, 137, 485, 685, 13289, 66445

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000001110001101

Octal: 201615

Duodecimal: 32551

Hexadecimal: 1038d

Square: 4414938025

Square Root: 257.76927667974707

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

Positive numbers y such that y² is of the form x²+(x+281)² with integer x. A157348

G.f. satisfies A(x) = 1/(1-x) + x⁴*A(x)⁴. A364591

Concatenating n with n+1 (in base 10) gives a number which is the product of 2 palindromes. A113942

a(n) = 12ⁿ mod n¹². A66445