657116144 has 10 divisors (see below), whose sum is σ = 1273162560. Its totient is φ = 328558064.

The previous prime is 657116087. The next prime is 657116149. The reversal of 657116144 is 441611756.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (657116149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20534864 + ... + 20534895.

It is an arithmetic number, because the mean of its divisors is an integer number (127316256).

Almost surely, 2^657116144 is an apocalyptic number.

It is an amenable number.

657116144 is a deficient number, since it is larger than the sum of its proper divisors (616046416).

657116144 is a wasteful number, since it uses less digits than its factorization.

657116144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41069767 (or 41069761 counting only the distinct ones).

The product of its digits is 20160, while the sum is 35.

The square root of 657116144 is about 25634.2767403334. The cubic root of 657116144 is about 869.3888092888.

The spelling of 657116144 in words is "six hundred fifty-seven million, one hundred sixteen thousand, one hundred forty-four".