Properties of the Number 68637

Sixty-Eight Thousand Six Hundred Thirty-Seven

Basics

Value: 68636 → 68637 → 68638

Parity: odd

Prime: No

Previous Prime: 68633

Next Prime: 68639

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 137 × 167

Divisors: 1, 3, 137, 167, 411, 501, 22879, 68637

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000110000011101

Octal: 206035

Duodecimal: 33879

Hexadecimal: 10c1d

Square: 4711037769

Square Root: 261.98664088078993

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 ways to reciprocally link elements of an nXk array either to themselves or to exactly two horizontal or antidiagonal neighbors. A220632

a(n) = ∑_d∣n φ(d⁴). A68970

Number of two-rowed partitions of length 5. A70558

Number of ways to reciprocally link elements of an 4 X n array either to themselves or to exactly two horizontal or antidiagonal neighbors. A220634

Number of nonnegative integer solutions to 2·n = x₁ + x₂ + ... + x_n + 2·y₁ + 2·y₂ + ... + 2·y_n. A351856

a(n) = Max(n, R(n)), where R(n) (A004086) = digit reversal of n. A68637