657613089 has 12 divisors (see below), whose sum is σ = 1085583616. Its totient is φ = 375778872.

The previous prime is 657613037. The next prime is 657613093. The reversal of 657613089 is 980316756.

It is a happy number.

It is not a de Polignac number, because 657613089 - 2⁸ = 657612833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (657613189) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5219089 + ... + 5219214.

Almost surely, 2^657613089 is an apocalyptic number.

It is an amenable number.

657613089 is a deficient number, since it is larger than the sum of its proper divisors (427970527).

657613089 is a wasteful number, since it uses less digits than its factorization.

657613089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10438316 (or 10438313 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 657613089 is about 25643.9678872050. The cubic root of 657613089 is about 869.6079128987.

The spelling of 657613089 in words is "six hundred fifty-seven million, six hundred thirteen thousand, eighty-nine".