660656060 has 12 divisors (see below), whose sum is σ = 1387377768. Its totient is φ = 264262416.

The previous prime is 660655997. The next prime is 660656081. The reversal of 660656060 is 60656066.

It is a super-2 number, since 2×660656060² = 872932859229447200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 660656060.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16516382 + ... + 16516421.

It is an arithmetic number, because the mean of its divisors is an integer number (115614814).

Almost surely, 2^660656060 is an apocalyptic number.

It is an amenable number.

660656060 is an abundant number, since it is smaller than the sum of its proper divisors (726721708).

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

660656060 is a wasteful number, since it uses less digits than its factorization.

660656060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33032812 (or 33032810 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 660656060 is about 25703.2305362575. The cubic root of 660656060 is about 870.9471606485.

The spelling of 660656060 in words is "six hundred sixty million, six hundred fifty-six thousand, sixty".