Properties of the Number 64680

Sixty-Four Thousand Six Hundred Eighty

Basics

Value: 64679 → 64680 → 64681

Parity: even

Prime: No

Previous Prime: 64679

Next Prime: 64693

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 ³ × 3 × 5 × 7 ² × 11

Divisors: 1, 2, 3, 4, 5, 6, 7, 8, 10, 11

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111110010101000

Octal: 176250

Duodecimal: 31520

Hexadecimal: fca8

Square: 4183502400

Square Root: 254.3226297441893

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 1/((1+x)*(1-x)⁵). A1752

Triangle read by rows where T(n,k) is the number of labeled simple graphs with n vertices and exactly k endpoints (vertices of degree 1). A327369

A partition product of Stirling₂ type [parameter k = 3] with biggest-part statistic (triangle read by rows). A157403

a(n) = n²*(n² - 1)/3. A112742

Numbers with exactly 5 distinct prime divisors {2,3,5,7,11}. A147572

a(n) = (3·n + 7)*Pochhammer(n, 5) / 4!. A293608

Numbers with prime factorization p·q*r·s²*t³ (where p, q, r, s, t are distinct primes). A190111

G.f.: A(x) = exp( ∑_n>=1 5ⁿ * xⁿ/(n*(1+xⁿ)) ). A259275

Number of n-node labeled graphs with three endpoints. A277074

There are exactly n integer-sided triangles of area a(n). A51586