657436045 has 16 divisors (see below), whose sum is σ = 902199168. Its totient is φ = 450527040.

The previous prime is 657435971. The next prime is 657436049. The reversal of 657436045 is 540634756.

It is not a de Polignac number, because 657436045 - 2²⁷ = 523218317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 657435989 and 657436007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (657436049) 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, 60315 + ... + 70375.

It is an arithmetic number, because the mean of its divisors is an integer number (56387448).

Almost surely, 2^657436045 is an apocalyptic number.

It is an amenable number.

657436045 is a deficient number, since it is larger than the sum of its proper divisors (244763123).

657436045 is a wasteful number, since it uses less digits than its factorization.

657436045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11940.

The product of its (nonzero) digits is 302400, while the sum is 40.

The square root of 657436045 is about 25640.5156929419. The cubic root of 657436045 is about 869.5298666613.

The spelling of 657436045 in words is "six hundred fifty-seven million, four hundred thirty-six thousand, forty-five".