Properties of the Number -2668

Six Hundred Sixty-Eight

Basics

Value: -2669 → -2668 → -2667

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 23 × 29

Divisors: 1, 2, 4, 23, 29, 46, 58, 92, 116, 667

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101001101100

Octal: -5154

Duodecimal: -1664

Hexadecimal: -a6c

Square: 7118224

Square Root: 51.65268628057983

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) = neg(M(n)), where M(n) is the n X n left circulant matrix with (row 1) = (1,3,5,7, ..., 2n - 1), and neg(M(n)) is the negative part of the determinant of M(n); see A380661. A384077

McKay-Thompson series of class 22B for Monster. A58568

McKay-Thompson series of class 22B for the Monster group with a(0) = -2. A132320

Expansion of tanh(tan(x)*sin(x))/2. A24239

Numbers n such that n³² + 1 is prime. A6315

Moebius transform of A064987, n*σ(n). A69097

a(n) = ∑_k=0..n-1 binomial(n-1,k)*binomial(n+k,k). Also a(n) = T(n,n), array T as in A049600. A47781

Number of primes less than 1000n. A38812

Numbers m such that there are precisely 11 groups of order m. A249554

a(n) = n*(n + 12). A98847