660472188 has 24 divisors (see below), whose sum is σ = 1551312000. Its totient is φ = 218698800.

The previous prime is 660472181. The next prime is 660472201. The reversal of 660472188 is 881274066.

660472188 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×660472188² = 872447022243014688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660472181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180438 + ... + 184061.

It is an arithmetic number, because the mean of its divisors is an integer number (64638000).

Almost surely, 2^660472188 is an apocalyptic number.

It is an amenable number.

660472188 is an abundant number, since it is smaller than the sum of its proper divisors (890839812).

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

660472188 is a wasteful number, since it uses less digits than its factorization.

660472188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364657 (or 364655 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 660472188 is about 25699.6534606986. The cubic root of 660472188 is about 870.8663532687.

The spelling of 660472188 in words is "six hundred sixty million, four hundred seventy-two thousand, one hundred eighty-eight".