656706032906 has 24 divisors (see below), whose sum is σ = 1237429552800. Its totient is φ = 255859492680.

The previous prime is 656706032891. The next prime is 656706032909. The reversal of 656706032906 is 609230607656.

656706032906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (656706032909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 193831256 + ... + 193834643.

It is an arithmetic number, because the mean of its divisors is an integer number (51559564700).

Almost surely, 2^656706032906 is an apocalyptic number.

656706032906 is a deficient number, since it is larger than the sum of its proper divisors (580723519894).

656706032906 is a wasteful number, since it uses less digits than its factorization.

656706032906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387665930 (or 387665919 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 50.

The spelling of 656706032906 in words is "six hundred fifty-six billion, seven hundred six million, thirty-two thousand, nine hundred six".