Properties of the Number 67561

Sixty-Seven Thousand Five Hundred Sixty-One

Basics

Value: 67560 → 67561 → 67562

Parity: odd

Prime: No

Previous Prime: 67559

Next Prime: 67567

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 13 × 5197

Divisors: 1, 13, 5197, 67561

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000011111101001

Octal: 203751

Duodecimal: 33121

Hexadecimal: 107e9

Square: 4564488721

Square Root: 259.9249891795708

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

In base-2 lunar arithmetic, number of binary numbers·of length n such that x·x has no zeros. A191701

Radii n of circles with integer radius that can approximately be squared integrally: the floor or ceiling of π*n² is an integer square. A67561

Lexicographically earliest sequence of distinct positive terms such that for any n > 1 and any prime number p, if p divides a(n) then the p-adic valuation of a(n) is one plus the p-adic valuation of a(n-1). A297409