Properties of the Number 68859

Sixty-Eight Thousand Eight Hundred Fifty-Nine

Basics

Value: 68858 → 68859 → 68860

Parity: odd

Prime: No

Previous Prime: 68821

Next Prime: 68863

Digit Sum: 36

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 7 × 1093

Divisors: 1, 3, 7, 9, 21, 63, 1093, 3279, 7651, 9837

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000110011111011

Octal: 206373

Duodecimal: 33A23

Hexadecimal: 10cfb

Square: 4741561881

Square Root: 262.40998456613653

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

Triangle T(n,k) (n >= 2, k = 3..n+floor(n/2)) giving number of bicoverings of an n-set with k blocks. A59443

Wieferich numbers (1): n > 1 such that 2^A000010(n) == 1 (mod n²). A77816

Number of 4-block bicoverings of an n-set. A59945

Odd numbers m such that σ(x) = m has more than 1 solution. A300869

Gaps of 2 in sequence A038593 (upper terms). A38644

Numbers m such that m² divides 2^k - 1 for some k, 0 < k <= m. A246503

Number of (n+2)X(1+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 2 3 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 2 3 6 or 7. A252525

Numbers that begin a run of 3 consecutive odd valued terms in A360519. A361112

a(1) = 3 = 1·3; a(n) = smallest multiple of a(n-1) which is of the form k(k+2). A68859