6564656 has 20 divisors (see below), whose sum is σ = 14536272. Its totient is φ = 2813376.

The previous prime is 6564647. The next prime is 6564661.

6564656 is nontrivially palindromic in base 10.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29195 + ... + 29418.

Almost surely, 2^6564656 is an apocalyptic number.

It is an amenable number.

6564656 is an abundant number, since it is smaller than the sum of its proper divisors (7971616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6564656 is a wasteful number, since it uses less digits than its factorization.

6564656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58628 (or 58622 counting only the distinct ones).

The product of its digits is 129600, while the sum is 38.

The square root of 6564656 is about 2562.1584650447. The cubic root of 6564656 is about 187.2423103040.

The spelling of 6564656 in words is "six million, five hundred sixty-four thousand, six hundred fifty-six".