Properties of the Number 68865

Sixty-Eight Thousand Eight Hundred Sixty-Five

Basics

Value: 68864 → 68865 → 68866

Parity: odd

Prime: No

Previous Prime: 68863

Next Prime: 68879

Digit Sum: 33

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 4591

Divisors: 1, 3, 5, 15, 4591, 13773, 22955, 68865

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

5184 Try Today's Challenge

Representations

Binary: 10000110100000001

Octal: 206401

Duodecimal: 33A29

Hexadecimal: 10d01

Square: 4742388225

Square Root: 262.42141680891825

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

E.g.f.: ∑_n>=0 a(n) * (cos(n·x) - sin(n·x))ⁿ * xⁿ/n! = 1 + x. A221534

Indices n of j-points j(n) for successive positive maxima of the Riemann ζ function on critical line. A327546

a(1) = 1; a(n) is the smallest triangular number not already in the sequence which differs from a(n-1) at every digit. A68865