656145056 has 48 divisors (see below), whose sum is σ = 1563178176. Its totient is φ = 264662016.

The previous prime is 656145053. The next prime is 656145067. The reversal of 656145056 is 650541656.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (656145053) 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, 82346 + ... + 89961.

It is an arithmetic number, because the mean of its divisors is an integer number (32566212).

Almost surely, 2^656145056 is an apocalyptic number.

It is an amenable number.

656145056 is an abundant number, since it is smaller than the sum of its proper divisors (907033120).

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

656145056 is a wasteful number, since it uses less digits than its factorization.

656145056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172341 (or 172333 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 38.

The square root of 656145056 is about 25615.3285358591. The cubic root of 656145056 is about 868.9603364487.

The spelling of 656145056 in words is "six hundred fifty-six million, one hundred forty-five thousand, fifty-six".