6568548964 has 12 divisors (see below), whose sum is σ = 11495528044. Its totient is φ = 3284112384.

The previous prime is 6568548949. The next prime is 6568549003. The reversal of 6568548964 is 4698458656.

It can be written as a sum of positive squares in 2 ways, for example, as 4794454564 + 1774094400 = 69242^2 + 42120^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140164 + ... + 181060.

Almost surely, 2^6568548964 is an apocalyptic number.

It is an amenable number.

6568548964 is a deficient number, since it is larger than the sum of its proper divisors (4926979080).

6568548964 is a wasteful number, since it uses less digits than its factorization.

6568548964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81054 (or 81052 counting only the distinct ones).

The product of its digits is 49766400, while the sum is 61.

The square root of 6568548964 is about 81046.5851470622. The cubic root of 6568548964 is about 1872.7931572267.

The spelling of 6568548964 in words is "six billion, five hundred sixty-eight million, five hundred forty-eight thousand, nine hundred sixty-four".