657041064 has 16 divisors (see below), whose sum is σ = 1642602720. Its totient is φ = 219013680.

The previous prime is 657041039. The next prime is 657041087. The reversal of 657041064 is 460140756.

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, 13688332 + ... + 13688379.

It is an arithmetic number, because the mean of its divisors is an integer number (102662670).

Almost surely, 2^657041064 is an apocalyptic number.

It is an amenable number.

657041064 is an abundant number, since it is smaller than the sum of its proper divisors (985561656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

657041064 is a wasteful number, since it uses less digits than its factorization.

657041064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27376720 (or 27376716 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 657041064 is about 25632.8122530479. The cubic root of 657041064 is about 869.3556968279.

The spelling of 657041064 in words is "six hundred fifty-seven million, forty-one thousand, sixty-four".