Properties of the Number 72671

Seventy-Two Thousand Six Hundred Seventy-One

Basics

Value: 72670 → 72671 → 72672

Parity: odd

Prime: Yes

Previous Prime: 72661

Next Prime: 72673

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 72671

Divisors: 1, 72671

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10001101111011111

Octal: 215737

Duodecimal: 3607B

Hexadecimal: 11bdf

Square: 5281074241

Square Root: 269.5755923669648

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

Primes p such that 5·p+6, 5·p+12, 5·p+18 and 5·p+24 are all primes. A355577

Emirps of the form k² + k + 41. A155953

Least m which can be written as i·j+i+j in n different ways: A072670(m)=n. A72671

a(n) is the number of edges of a regular polygon P with the property that packing n nonoverlapping equal circles inside P, arranged in a configuration with dihedral symmetry D_2m with m >= 3, maximizes the packing density. A343262