660101656 has 32 divisors (see below), whose sum is σ = 1307093760. Its totient is φ = 311889952.

The previous prime is 660101641. The next prime is 660101669. The reversal of 660101656 is 656101066.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6340 + ... + 36883.

It is an arithmetic number, because the mean of its divisors is an integer number (40846680).

Almost surely, 2^660101656 is an apocalyptic number.

It is an amenable number.

660101656 is a deficient number, since it is larger than the sum of its proper divisors (646992104).

660101656 is a wasteful number, since it uses less digits than its factorization.

660101656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43335 (or 43331 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 660101656 is about 25692.4435583695. The cubic root of 660101656 is about 870.7034676750.

The spelling of 660101656 in words is "six hundred sixty million, one hundred one thousand, six hundred fifty-six".