Properties of the Number 67868

Sixty-Seven Thousand Eight Hundred Sixty-Eight

Basics

Value: 67867 → 67868 → 67869

Parity: even

Prime: No

Previous Prime: 67867

Next Prime: 67883

Digit Sum: 35

Digital Root: 8

Palindrome: No

Factorization: 2 ² × 19 ² × 47

Divisors: 1, 2, 4, 19, 38, 47, 76, 94, 188, 361

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000100100011100

Octal: 204434

Duodecimal: 33338

Hexadecimal: 1091c

Square: 4606065424

Square Root: 260.5148748152397

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

Number of irreducible indecomposable spherical curves with n crossings (only ordinary double points), the circle is oriented, the sphere is not oriented (OU case). A7756

G.f. A(x) = 1 / (1 - x^a(0) / (1 - x^a(1) / (1 - x^a(2) / ... ))). A213411

a(n) = a(n-1) + a(floor(n/2))² for n > 0, a(0) = 1. A67868

Number of nX4 0..4 arrays with each element·equal to the number its horizontal and vertical neighbors equal to 4,3,1,1,1 for x=0,1,2,3,4. A197360

G.f. A(x) satisfies: A( A(x)² - 2·A(x)³ ) = x·A(x). A272820