Properties of the Number 6985

Six Thousand Nine Hundred Eighty-Five

Basics

Value: 6984 → 6985 → 6986

Parity: odd

Prime: No

Previous Prime: 6983

Next Prime: 6991

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 5 × 11 × 127

Divisors: 1, 5, 11, 55, 127, 635, 1397, 6985

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101101001001

Octal: 15511

Duodecimal: 4061

Hexadecimal: 1b49

Square: 48790225

Square Root: 83.57631243360764

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 whose negated run-lengths are unimodal. A332638

Values of n such that L(20) and N(20) are both prime, where L(k) = (n²+n+1)*2^2·k + (2·n+1)*2^k + 1, N(k) = (n²+n+1)*2^k + n. A227523

Numbers m such that the factorizations of m..m+3 have the same number of primes (including multiplicities). A45940

a(n) = (2·n-1)*(n² -n +6)/6. A49480

a(n) is the first of a triple of consecutive integers, each of which is the product of three distinct primes. A66509

a(n) = n*(16·n² - 21·n + 7)/2. A260260

Zero, together with positive numbers k such that prime(k) - k is a square. A64370

The 240-degree spoke (or ray) of a hexagonal spiral of Ulam. A244805

Partial sums of A007489. A14145

a(n) = n³ + (n+1)³ + (n+2)³ + (n+3)³ + (n+4)³. A27604