660660956 has 12 divisors (see below), whose sum is σ = 1156418592. Its totient is φ = 330255648.

The previous prime is 660660943. The next prime is 660660967. The reversal of 660660956 is 659066066.

660660956 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 3 ways as a sum of consecutive naturals, for example, 4301 + ... + 36603.

It is an arithmetic number, because the mean of its divisors is an integer number (96368216).

Almost surely, 2^660660956 is an apocalyptic number.

It is an amenable number.

660660956 is a deficient number, since it is larger than the sum of its proper divisors (495757636).

660660956 is a wasteful number, since it uses less digits than its factorization.

660660956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37420 (or 37418 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 44.

The square root of 660660956 is about 25703.3257770274. The cubic root of 660660956 is about 870.9493121194.

The spelling of 660660956 in words is "six hundred sixty million, six hundred sixty thousand, nine hundred fifty-six".