Properties of the Number 66765

Sixty-Six Thousand Seven Hundred Sixty-Five

Basics

Value: 66764 → 66765 → 66766

Parity: odd

Prime: No

Previous Prime: 66763

Next Prime: 66791

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 × 4451

Divisors: 1, 3, 5, 15, 4451, 13353, 22255, 66765

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000010011001101

Octal: 202315

Duodecimal: 32779

Hexadecimal: 104cd

Square: 4457565225

Square Root: 258.3892412620928

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

Triangle read by rows: T(n,k) is the number of oriented colorings of the facets of a regular n-dimensional orthotope using exactly k colors. Row n has 2n columns. A325008

Numbers k such that k and k² use only the digits 2, 4, 5, 6 and 7. A137094

Numbers k such that φ(k) < k/5. A66765