Properties of the Number 72065

Seventy-Two Thousand Sixty-Five

Basics

Value: 72064 → 72065 → 72066

Parity: odd

Prime: No

Previous Prime: 72053

Next Prime: 72073

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 5 × 7 × 29 × 71

Divisors: 1, 5, 7, 29, 35, 71, 145, 203, 355, 497

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10001100110000001

Octal: 214601

Duodecimal: 35855

Hexadecimal: 11981

Square: 5193364225

Square Root: 268.44925032489846

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

Least integer k>1 such that sqrt(k)/log(k) exceeds n. A262058

Quasi-Carmichael numbers to base -7: squarefree composites n such that prime p∣n ==> p+7∣n+7. A29567

Partial sums of floor(n³/3). A173707

Define a "piece" to consist of 3 mutually touching pennies welded together to form a triangle; sequence gives side lengths of triangles that can be made from such pieces. A72065