Properties of the Number 66340

Sixty-Six Thousand Three Hundred Forty

Basics

Value: 66339 → 66340 → 66341

Parity: even

Prime: No

Previous Prime: 66337

Next Prime: 66343

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 5 × 31 × 107

Divisors: 1, 2, 4, 5, 10, 20, 31, 62, 107, 124

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

603 Try Today's Challenge

Representations

Binary: 10000001100100100

Octal: 201444

Duodecimal: 32484

Hexadecimal: 10324

Square: 4400995600

Square Root: 257.56552564347584

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) = ∑_{d divides n} d^{n/d + 1}. A78308

Numbers that are the sum of six fourth powers in six or more ways. A345563

Numbers that are the sum of six fourth powers in exactly six ways. A345818

Smallest positive multiple of n whose base 9 representation contains only 0's and 1's. A244960

Diagonal in array of n-gonal numbers A081422. A81438

Sums of 4 distinct powers of 9. A38489

L.g.f.: log(∏_k>=1 (1 + k·x^k)) = ∑_n>=1 a(n)*xⁿ/n. A300786

Numbers of the form a+b+c = a³ - b³ - c³ where a > b >= c > 0. A355491

Table T(d,n) of smallest k>1 such that binomial(k·n-1,n-1) == 1 (mod n^d), read by antidiagonals. A242166

Fermat's triangle: T(n,m) = m^φ(n) mod n; n >= 2; 1 <= m <= n-1, where φ is Euler's totient function. A66340