Properties of the Number 68887

Sixty-Eight Thousand Eight Hundred Eighty-Seven

Basics

Value: 68886 → 68887 → 68888

Parity: odd

Prime: No

Previous Prime: 68881

Next Prime: 68891

Digit Sum: 37

Digital Root: 1

Palindrome: No

Factorization: 7 × 13 × 757

Divisors: 1, 7, 13, 91, 757, 5299, 9841, 68887

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000110100010111

Octal: 206427

Duodecimal: 33A47

Hexadecimal: 10d17

Square: 4745418769

Square Root: 262.463330772129

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

a(n) = sigma₂(n) * sigma₃(n). A379814

Expansion of (1-x)/( (1+x)*(1-2·x)*(1-3·x)*(1-4·x)). A4057

Numerators of the other-side convergents to sqrt(6). A259595

Partial sums of A162766. A164265

The list of the a(n)-values in the common solutions to k+1=b² and 6·k+1=a². A216073

Primes with property that digits alternate in parity individually as well as in concatenation with previous terms. A68887

Indices of primes in sequence defined by A(0) = 67, A(n) = 10·A(n-1) + 17 for n > 0. A101539

Numbers n such that 6·10ⁿ + 8·R_n - 1 is prime, where R_n = 11...1 is the repunit (A002275) of length n. A103046

a(n) is the position of a(n-1) in the decimal expansion of π, starting with a(1)=13. A119744