656630730 has 48 divisors (see below), whose sum is σ = 1951133184. Its totient is φ = 150086880.

The previous prime is 656630719. The next prime is 656630743. The reversal of 656630730 is 37036656.

656630730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 520506 + ... + 521765.

It is an arithmetic number, because the mean of its divisors is an integer number (40648608).

Almost surely, 2^656630730 is an apocalyptic number.

656630730 is an abundant number, since it is smaller than the sum of its proper divisors (1294502454).

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

656630730 is a wasteful number, since it uses less digits than its factorization.

656630730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042291 (or 1042288 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 36.

The square root of 656630730 is about 25624.8069261019. The cubic root of 656630730 is about 869.1746830341.

The spelling of 656630730 in words is "six hundred fifty-six million, six hundred thirty thousand, seven hundred thirty".