657364044 has 12 divisors (see below), whose sum is σ = 1533849464. Its totient is φ = 219121344.

The previous prime is 657364039. The next prime is 657364061. The reversal of 657364044 is 440463756.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 657363993 and 657364011.

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, 27390157 + ... + 27390180.

Almost surely, 2^657364044 is an apocalyptic number.

It is an amenable number.

657364044 is an abundant number, since it is smaller than the sum of its proper divisors (876485420).

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

657364044 is a wasteful number, since it uses less digits than its factorization.

657364044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54780344 (or 54780342 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 39.

The square root of 657364044 is about 25639.1116070741. Note that the first 3 decimals coincide. The cubic root of 657364044 is about 869.4981224807.

The spelling of 657364044 in words is "six hundred fifty-seven million, three hundred sixty-four thousand, forty-four".