Properties of the Number -87649

Eighty-Seven Thousand Six Hundred Forty-Nine

Basics

Value: -87650 → -87649 → -87648

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 34

Digital Root: 7

Palindrome: No

Factorization: 87649

Divisors: 1, 87649

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10101011001100001

Octal: -253141

Duodecimal: -42881

Hexadecimal: -15661

Square: 7682347201

Square Root: 296.05573799539843

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

Primes p such that A001175(p) = (p-1)/8. A308793

Primes of the form 8n⁴ - 2n³ - 132n² + 318n + 80557. A95946

G.f. A(x) satisfies: A(x) = x + x² * exp( ∑_k>=1 A(x^k)⁴ / (k·x^3·k) ). A363466

Base 4 expansion of 1/n has equal percentage of each digit 0,1,2,3 (primitive values of n only). A74900

Number of compositions of n such that every part divides the largest part. A130708

Primes of the form 20n²+8n+1. A154405

Primes of the form x² + 18480·y². A173274

Number of nondecreasing -n..n vectors of length 4 whose dot product with some nondecreasing -n..n vector equals 4. A226412

Primes p such that p⁶ - p⁵ + 1 and p⁶ - p⁵ - 1 are both primes. A243522

Least prime p such that π(p·n)² + 1 = prime(q·n) for some prime q. A260219