6657804568 has 16 divisors (see below), whose sum is σ = 12820772880. Its totient is φ = 3238931808.

The previous prime is 6657804563. The next prime is 6657804583. The reversal of 6657804568 is 8654087566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6657804563) by changing a digit.

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, 11245996 + ... + 11246587.

It is an arithmetic number, because the mean of its divisors is an integer number (801298305).

Almost surely, 2^6657804568 is an apocalyptic number.

It is an amenable number.

6657804568 is a deficient number, since it is larger than the sum of its proper divisors (6162968312).

6657804568 is a wasteful number, since it uses less digits than its factorization.

6657804568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22492626 (or 22492622 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 55.

The square root of 6657804568 is about 81595.3709961539. The cubic root of 6657804568 is about 1881.2377325455.

The spelling of 6657804568 in words is "six billion, six hundred fifty-seven million, eight hundred four thousand, five hundred sixty-eight".