657368668 has 12 divisors (see below), whose sum is σ = 1254976632. Its totient is φ = 298803920.

The previous prime is 657368653. The next prime is 657368689. The reversal of 657368668 is 866863756.

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, 7470055 + ... + 7470142.

It is an arithmetic number, because the mean of its divisors is an integer number (104581386).

Almost surely, 2^657368668 is an apocalyptic number.

It is an amenable number.

657368668 is a deficient number, since it is larger than the sum of its proper divisors (597607964).

657368668 is a wasteful number, since it uses less digits than its factorization.

657368668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14940212 (or 14940210 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 55.

The square root of 657368668 is about 25639.2017816468. The cubic root of 657368668 is about 869.5001612038.

The spelling of 657368668 in words is "six hundred fifty-seven million, three hundred sixty-eight thousand, six hundred sixty-eight".