Properties of the Number -7668

Six Hundred Sixty-Eight

Basics

Value: -7669 → -7668 → -7667

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ³ × 71

Divisors: 1, 2, 3, 4, 6, 9, 12, 18, 27, 36

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1110111110100

Octal: -16764

Duodecimal: -4530

Hexadecimal: -1df4

Square: 58798224

Square Root: 87.56711711595854

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

Expansion of ∏_k>=1 (1 - x^k)¹². A735

Triangle read by rows generated from A007249, the convolution square root of A007191. A161196

Fourier coefficients of the modular form (1/t_6a) * sqrt( 1-12·sqrt(-3)/t_6a ) * F_6a⁶. A341563

Numbers k such that 10^k + 3 is prime. A49054

3 times hexagonal numbers: a(n) = 3·n*(2·n-1). A94159

Number of integer compositions of n that are the first sums of more than one composition. A391628

Numbers n such that σ(n) = 8*φ(n). A104901

a(n) = (9·n² + 5·n + 2)/2. A64225

Number of partitions of n-set in which number of blocks of size 2k is even (or zero) for every k. A102759

Triangle of numbers, called Y(1,2), related to generalized Catalan numbers A062992(n) = C(2;n+1) = A064062(n+1). A115195