660943812 has 12 divisors (see below), whose sum is σ = 1542202256. Its totient is φ = 220314600.

The previous prime is 660943793. The next prime is 660943813. The reversal of 660943812 is 218349066.

660943812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (660943813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27539314 + ... + 27539337.

Almost surely, 2^660943812 is an apocalyptic number.

It is an amenable number.

660943812 is an abundant number, since it is smaller than the sum of its proper divisors (881258444).

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

660943812 is a wasteful number, since it uses less digits than its factorization.

660943812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55078658 (or 55078656 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 660943812 is about 25708.8275111877. The cubic root of 660943812 is about 871.0735907360.

The spelling of 660943812 in words is "six hundred sixty million, nine hundred forty-three thousand, eight hundred twelve".