656005660 has 48 divisors (see below), whose sum is σ = 1410282720. Its totient is φ = 256239360.

The previous prime is 656005633. The next prime is 656005697. The reversal of 656005660 is 66500656.

656005660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183490 + ... + 187030.

It is an arithmetic number, because the mean of its divisors is an integer number (29380890).

Almost surely, 2^656005660 is an apocalyptic number.

It is an amenable number.

656005660 is an abundant number, since it is smaller than the sum of its proper divisors (754277060).

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

656005660 is a wasteful number, since it uses less digits than its factorization.

656005660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3766 (or 3764 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 656005660 is about 25612.6074424296. The cubic root of 656005660 is about 868.8987961064.

The spelling of 656005660 in words is "six hundred fifty-six million, five thousand, six hundred sixty".