657695013 has 16 divisors (see below), whose sum is σ = 923704320. Its totient is φ = 415105776.

The previous prime is 657694993. The next prime is 657695021. The reversal of 657695013 is 310596756.

It is a happy number.

It is not a de Polignac number, because 657695013 - 2⁶ = 657694949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (657695023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110356 + ... + 116162.

It is an arithmetic number, because the mean of its divisors is an integer number (57731520).

Almost surely, 2^657695013 is an apocalyptic number.

It is an amenable number.

657695013 is a deficient number, since it is larger than the sum of its proper divisors (266009307).

657695013 is a wasteful number, since it uses less digits than its factorization.

657695013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7816.

The product of its (nonzero) digits is 170100, while the sum is 42.

The square root of 657695013 is about 25645.5651721696. The cubic root of 657695013 is about 869.6440226830.

The spelling of 657695013 in words is "six hundred fifty-seven million, six hundred ninety-five thousand, thirteen".