Properties of the Number -9687

Six Hundred Eighty-Seven

Basics

Value: -9688 → -9687 → -9686

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 3229

Divisors: 1, 3, 3229, 9687

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

9108 Try Today's Challenge

Representations

Binary: -10010111010111

Octal: -22727

Duodecimal: -5733

Hexadecimal: -25d7

Square: 93837969

Square Root: 98.42255838983256

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

Number of integer partitions of n with at least two but not all parts having a common divisor greater than 1. A303139

Expansion of ∏_k>=1 (1 + x^k)^k*(k+1*(2·k+1)/6). A281156

Integers of the form ∑_k=1..m d(k), where d(k) is the decimal fraction 0.k (e.g. d(999)=0.999). A275623

Expansion of ∑_i>=1 i·xⁱ/(1 - x) * ∏_j=1..i 1/(1 - x^j). A284870

a(n) = A000043(n)-2. A153798

Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 358", based on the 5-celled von Neumann neighborhood. A287784

Number of equicolorable rooted trees on 2n nodes. A119855

Least positive integer k such that k·n+1 = prime(p) and k²*n+1 = prime(q) for some pair of primes p and q. A261437

Integers n > 7059 such that the 'Reverse and Add!' trajectory of n joins the trajectory of 7059. A63058

Where records occur in A111390. A114111