6657522568 has 16 divisors (see below), whose sum is σ = 12518833680. Its totient is φ = 3319166928.

The previous prime is 6657522563. The next prime is 6657522581. The reversal of 6657522568 is 8652257566.

It is not an unprimeable number, because it can be changed into a prime (6657522563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1196346 + ... + 1201897.

It is an arithmetic number, because the mean of its divisors is an integer number (782427105).

Almost surely, 2^6657522568 is an apocalyptic number.

It is an amenable number.

6657522568 is a deficient number, since it is larger than the sum of its proper divisors (5861311112).

6657522568 is a wasteful number, since it uses less digits than its factorization.

6657522568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2398596 (or 2398592 counting only the distinct ones).

The product of its digits is 6048000, while the sum is 52.

The square root of 6657522568 is about 81593.6429386506. The cubic root of 6657522568 is about 1881.2111714108.

The spelling of 6657522568 in words is "six billion, six hundred fifty-seven million, five hundred twenty-two thousand, five hundred sixty-eight".