660891196 has 12 divisors (see below), whose sum is σ = 1321782448. Its totient is φ = 283239072.

The previous prime is 660891191. The next prime is 660891227. The reversal of 660891196 is 691198066.

660891196 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

660891196 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660891191) 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, 11801601 + ... + 11801656.

Almost surely, 2^660891196 is an apocalyptic number.

It is an amenable number.

660891196 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

660891196 is a wasteful number, since it uses less digits than its factorization.

660891196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23603268 (or 23603266 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 660891196 is about 25707.8041847218. The cubic root of 660891196 is about 871.0504754961.

The spelling of 660891196 in words is "six hundred sixty million, eight hundred ninety-one thousand, one hundred ninety-six".