Properties of the Number 7664

Seven Thousand Six Hundred Sixty-Four

Basics

Value: 7663 → 7664 → 7665

Parity: even

Prime: No

Previous Prime: 7649

Next Prime: 7669

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 ⁴ × 479

Divisors: 1, 2, 4, 8, 16, 479, 958, 1916, 3832, 7664

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1110111110000

Octal: 16760

Duodecimal: 4528

Hexadecimal: 1df0

Square: 58736896

Square Root: 87.54427451295716

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

Triangle of Euler-Bernoulli or Entringer numbers read by rows: T(n,k) is the number of down-up permutations of n+1 starting with k+1. A8282

Number of partitions of n for which 2*(number of distinct parts) <= (number of parts). A237363

Triangle of Euler-Bernoulli or Entringer numbers read by rows. A8281

Boustrophedon version of triangle of Euler-Bernoulli or Entringer numbers read by rows. A8280

Triangle of Euler-Bernoulli or Entringer numbers. A10094

Positive numbers that are not the sum of two squares and a positive Fibonacci number. A115176

Numbers k such that A136675(k) is prime. A136683

Number of groups of order prime(n)⁶. A232106

Irregular triangular array, read by rows: row n shows the coefficients of the polynomial p(n,x) defined in Comments. A329429

Expansion of series related to Liouville's Last Theorem: g.f. ∑_t>0 (-1)^t+1 *x^t*(t+1/2) / ( (1-x^t)³ *∏_i=1..t (1-xⁱ) ). A59820