Properties of the Number 68656

Sixty-Eight Thousand Six Hundred Fifty-Six

Basics

Value: 68655 → 68656 → 68657

Parity: even

Prime: No

Previous Prime: 68639

Next Prime: 68659

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 2 ⁴ × 7 × 613

Divisors: 1, 2, 4, 7, 8, 14, 16, 28, 56, 112

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000110000110000

Octal: 206060

Duodecimal: 33894

Hexadecimal: 10c30

Square: 4713646336

Square Root: 262.0228997625971

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

T(n,k)=Number of nXk 0..4 arrays with each element·equal to the number of its horizontal and vertical neighbors equal to 0,3,1,1,1 for x=0,1,2,3,4. A197623

Numbers k such that 4·k + 1 is a perfect cube, sorted by absolute values. A305290

Number of binary strings of length n with equal numbers of 00000 and 11011 substrings. A164190

Number of nX6 0..4 arrays with each element·equal to the number its horizontal and vertical neighbors equal to 0,3,1,1,1 for x=0,1,2,3,4. A197621

Number of n X n 0..4 arrays with each element·equal to the number of its horizontal and vertical neighbors equal to 0,3,1,1,1 for x=0,1,2,3,4. A197616

Number of (n+2)X(6+2) 0..3 arrays with every 3X3 subblock row and column sum unequal to 4 or 5 and every diagonal and antidiagonal sum equal to 4 or 5. A251903

Revert transform of (1 - x + 2x² - x³)/(1 + 2x²). A49142

Duplicate of A030997. A68656