6658944568 has 16 divisors (see below), whose sum is σ = 12775882680. Its totient is φ = 3252042528.

The previous prime is 6658944517. The next prime is 6658944581. The reversal of 6658944568 is 8654498566.

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, 9678355 + ... + 9679042.

Almost surely, 2^6658944568 is an apocalyptic number.

It is an amenable number.

6658944568 is a deficient number, since it is larger than the sum of its proper divisors (6116938112).

6658944568 is a wasteful number, since it uses less digits than its factorization.

6658944568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19357446 (or 19357442 counting only the distinct ones).

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

The square root of 6658944568 is about 81602.3563875456. The cubic root of 6658944568 is about 1881.3450997013.

The spelling of 6658944568 in words is "six billion, six hundred fifty-eight million, nine hundred forty-four thousand, five hundred sixty-eight".