Properties of the Number 72643

Seventy-Two Thousand Six Hundred Forty-Three

Basics

Value: 72642 → 72643 → 72644

Parity: odd

Prime: Yes

Previous Prime: 72623

Next Prime: 72647

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 72643

Divisors: 1, 72643

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10001101111000011

Octal: 215703

Duodecimal: 36057

Hexadecimal: 11bc3

Square: 5277005449

Square Root: 269.5236538784676

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 for which exactly five bases b with 1 < b < p exist such that p is a base b Wieferich prime. A255208

Consider primes p such that integer part of the volume of cube with faces of area p is prime; sequence gives integer part of volumes. A107989

a(n+1) = a(n-3) + a(n-2) - a(n-1) + a(n) starting with 1, 2, 3, 4. A180046

Primes p such that p+4, 3·p+4 and 3·p+8 are also prime. A352170

a[n] =a[n-1] + 2·n*Prime[n]-n². A93809

Half of the binary width of the terms of A014486, the number of digits in A063171(n)/2. A72643

Number of (n+1)X2 0..5 arrays with column and row pair sums b(i,j)=a(i,j)+a(i,j-1) and c(i,j)=a(i,j)+a(i-1,j) nondecreasing in column and row directions, respectively. A203937