Properties of the Number 68019

Sixty-Eight Thousand Nineteen

Basics

Value: 68018 → 68019 → 68020

Parity: odd

Prime: No

Previous Prime: 67993

Next Prime: 68023

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 7 × 41 × 79

Divisors: 1, 3, 7, 21, 41, 79, 123, 237, 287, 553

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000100110110011

Octal: 204663

Duodecimal: 33443

Hexadecimal: 109b3

Square: 4626584361

Square Root: 260.8045245006305

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

Convolution square-root of column 1 (A127084) of triangle A127082. A127087

a(n) = [ a(n-1)/a(1) ] + [ a(n-3)/a(3) ] + [ a(n-5)/a(5) ] + ..., for n >= 3. A22866

Numbers whose set of base-12 digits is {3,4}. A32836

Composite n such that both 1 + φ(n) and -1 + φ(n) are primes, i.e., φ(n) is the middle term between twin primes (A014574). A68019