Properties of the Number 68778

Sixty-Eight Thousand Seven Hundred Seventy-Eight

Basics

Value: 68777 → 68778 → 68779

Parity: even

Prime: No

Previous Prime: 68777

Next Prime: 68791

Digit Sum: 36

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 3821

Divisors: 1, 2, 3, 6, 9, 18, 3821, 7642, 11463, 22926

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000110010101010

Octal: 206252

Duodecimal: 33976

Hexadecimal: 10caa

Square: 4730413284

Square Root: 262.25560051217207

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

Irregular table read by rows: The number of k-faced polyhedra, where k>=4, created when an n-antiprism, formed from two n-sided regular polygons joined by 2n adjacent alternating triangles, is internally cut by all the planes defined by any three of its vertices. A338808

a(n) = a(1) + a(2) + ... + a(n-1) + a(m) for n >= 4, where m = 2·n - 2 - 2^p+1 and p is the unique integer such that 2^p < n - 1 <= 2^p+1, starting with a(1) = 1 and a(2) = a(3) = 2. A49955

Numbers k such that the powerful part of the sum of divisors of k (A387726) is greater than or equal to k, and σ(k) is not itself a powerful number. A387729

Number of partitions of n whose minimal excluded multiplicity is odd. A300183

S(n; 1,1) = S(n; 3,1) where S(n; t,s) is the number of length n 4-ary strings whose digits sum to t mod 4 and whose sum of products of all pairs of digits sum to s mod 4. A68778