Properties of the Number 66785

Sixty-Six Thousand Seven Hundred Eighty-Five

Basics

Value: 66784 → 66785 → 66786

Parity: odd

Prime: No

Previous Prime: 66763

Next Prime: 66791

Digit Sum: 32

Digital Root: 5

Palindrome: No

Factorization: 5 × 19 ² × 37

Divisors: 1, 5, 19, 37, 95, 185, 361, 703, 1805, 3515

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000010011100001

Octal: 202341

Duodecimal: 32795

Hexadecimal: 104e1

Square: 4460236225

Square Root: 258.42793966597344

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 such that the sequence of all possible sums of divisors of n is increasing but not strictly so, the sums being ordered by their characteristic functions, seen as binary numbers (see example). A230492

Numbers k such that (k, φ(k), σ(k)) lies on a sphere with integral radius centered at the origin, i.e., k² + φ(k)² + σ(k)² is a square. A66785