656564001 has 8 divisors (see below), whose sum is σ = 899078784. Its totient is φ = 425879280.

The previous prime is 656563993. The next prime is 656564011. The reversal of 656564001 is 100465656.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 656564001 - 2³ = 656563993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (656564011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2957385 + ... + 2957606.

It is an arithmetic number, because the mean of its divisors is an integer number (112384848).

Almost surely, 2^656564001 is an apocalyptic number.

It is an amenable number.

656564001 is a deficient number, since it is larger than the sum of its proper divisors (242514783).

656564001 is a wasteful number, since it uses less digits than its factorization.

656564001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5915031.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 656564001 is about 25623.5048539422. The cubic root of 656564001 is about 869.1452392288.

The spelling of 656564001 in words is "six hundred fifty-six million, five hundred sixty-four thousand, one".