Properties of the Number 67381

Sixty-Seven Thousand Three Hundred Eighty-One

Basics

Value: 67380 → 67381 → 67382

Parity: odd

Prime: No

Previous Prime: 67369

Next Prime: 67391

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 43 × 1567

Divisors: 1, 43, 1567, 67381

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000011100110101

Octal: 203465

Duodecimal: 32BB1

Hexadecimal: 10735

Square: 4540199161

Square Root: 259.57850450297303

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

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 675", based on the 5-celled von Neumann neighborhood. A273408

Number of ways, counted up to symmetry, to build a contiguous building with n LEGO blocks of size 1 X 3 which is flat, i.e., with all blocks in parallel position and symmetric after a rotation by 180 degrees. A123773

Smallest prime expressible as the sum of (at least two) consecutive primes in n ways. A67381