656353604604 has 48 divisors (see below), whose sum is σ = 1552410961920. Its totient is φ = 215801551680.

The previous prime is 656353604603. The next prime is 656353604663. The reversal of 656353604604 is 406406353656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656353604603) 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, 618589 + ... + 1302059.

It is an arithmetic number, because the mean of its divisors is an integer number (32341895040).

Almost surely, 2^656353604604 is an apocalyptic number.

It is an amenable number.

656353604604 is an abundant number, since it is smaller than the sum of its proper divisors (896057357316).

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

656353604604 is a wasteful number, since it uses less digits than its factorization.

656353604604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684570 (or 684568 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 48.

The spelling of 656353604604 in words is "six hundred fifty-six billion, three hundred fifty-three million, six hundred four thousand, six hundred four".