Properties of the Number -103685

One Hundred Three Thousand Six Hundred Eighty-Five

Basics

Value: -103686 → -103685 → -103684

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 5 × 89 × 233

Divisors: 1, 5, 89, 233, 445, 1165, 20737, 103685

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11001010100000101

Octal: -312405

Duodecimal: -50005

Hexadecimal: -19505

Square: 10750579225

Square Root: 322.001552791287

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

For every positive integer m, let u(m) = (d(1),d(2),...,d(k)) be the unitary divisors of m. The sequence (a(n)) consists of successive numbers m which d(k)/d(1) + d(k-1)/d(2) + ... + d(k)/d(1) is an integer. A229996

Number of independent sets of vertices in graph K₄ X C_n (n > 2). A51929

a(n) = Lucas(4n) + 3, or 5·Fibonacci(2n-1)*Fibonacci(2n+1). A81076

Numbers that divide the average of the sum of the squares of their divisors. A255244

Numbers m such that DivisorSigma(4·k-2, m) mod m = 0 holds presumably for all k; that is, (4k-2)-power-sums of divisors of m are divisible by m for all k. A66290

Numbers k such that the sum of the squares of the odd divisors of k (A050999) is divisible by k. A355543

Integers of the form k² + 1, where k >= 1, that are the product of two other integers of the form k² + 1, where k >= 1. A372496

a(n) = Lucas(n) + 3. A366506

a(n) = Lucas(2·n) + 2*(-1)ⁿ + 1. A366508