6504664056 has 32 divisors (see below), whose sum is σ = 17739993600. Its totient is φ = 1971110240.

The previous prime is 6504664027. The next prime is 6504664073.

It is a happy number.

6504664056 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×6504664056² = 84621308962836742272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6504663999 and 6504664017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12319176 + ... + 12319703.

It is an arithmetic number, because the mean of its divisors is an integer number (554374800).

Almost surely, 2^6504664056 is an apocalyptic number.

6504664056 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

6504664056 is an abundant number, since it is smaller than the sum of its proper divisors (11235329544).

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

6504664056 is a wasteful number, since it uses less digits than its factorization.

6504664056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24638899 (or 24638895 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 42.

The square root of 6504664056 is about 80651.4975434430. The cubic root of 6504664056 is about 1866.7018470977.

The spelling of 6504664056 in words is "six billion, five hundred four million, six hundred sixty-four thousand, fifty-six".