Properties of the Number 68078

Sixty-Eight Thousand Seventy-Eight

Basics

Value: 68077 → 68078 → 68079

Parity: even

Prime: No

Previous Prime: 68071

Next Prime: 68087

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 2 × 34039

Divisors: 1, 2, 34039, 68078

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000100111101110

Octal: 204756

Duodecimal: 33492

Hexadecimal: 109ee

Square: 4634614084

Square Root: 260.91761151750563

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

Conjectured largest number having n representations as the sum of two twin primes p + q with p >= q. A212613

a(n) = a(n-1) + a(n-2) + a([2n/3]), where a(0) = 1, a(1) = 2, a(2) = 3. A298343

a(1) = 1, a(2) = 2, a(3) = 3; for n > 3, a(n) is the smallest positive number which has not appeared such that all the distinct prime factors of a(n-3) + a(n-2) + a(n-1) are factors of a(n). A361593

[ exp(11/21)*n! ]. A30845

Numbers k such that 3·R_k + 20 is prime, where R_k = 11...1 is the repunit (A002275) of length k. A256463

Numbers k such that (σ(k)+σ(k+1))/k is an integer. A68078

Index of first occurrence of n in A129363, or 0 if no such number exists. A376287