Properties of the Number 9664

Nine Thousand Six Hundred Sixty-Four

Basics

Value: 9663 → 9664 → 9665

Parity: even

Prime: No

Previous Prime: 9661

Next Prime: 9677

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 ⁶ × 151

Divisors: 1, 2, 4, 8, 16, 32, 64, 151, 302, 604

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10010111000000

Octal: 22700

Duodecimal: 5714

Hexadecimal: 25c0

Square: 93392896

Square Root: 98.30564581955606

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

Numbers m whose deficiency is 24: σ(m) - 2·m = -24. A385255

Numbers with prime factorization p·q⁶. A189987

Triangle read by rows: T(n,k) = t(n-k, k); t(n,m) = f(m)*t(n-1,m) + f(n)*t(n,m-1), where f(x) = 2·x + 2. A257609

Numbers with 14 divisors. A30632

Expansion of 1/(1-2·x-2·x³). A52912

a(0) = 1; for n>0, a(n) = number of distinct sums of subsets of {1, 1/2, 1/3, 1/4, ..., 1/n} (allowing the empty subset). A72207

Coefficients in the expansion of 1/([r] + [2r]x + [3r]x² + ...); [ ] = floor, r = 9/5. A279781

n(k) is the minimum number of n that need at least another number of k to make Prime[n]+2·Prime[n-k]a prime. A114232

Positive integers n such that x² - 18xy + y² + n = 0 has integer solutions. A236331

a(n) = [xⁿ] ∏_k=1..n (1 + (n - k + 1)*x^k). A303188