198810668 has 12 divisors (see below), whose sum is σ = 397621392. Its totient is φ = 85204560.

The previous prime is 198810653. The next prime is 198810673. The reversal of 198810668 is 866018891.

198810668 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3550163 + ... + 3550218.

It is an arithmetic number, because the mean of its divisors is an integer number (33135116).

Almost surely, 2^198810668 is an apocalyptic number.

It is an amenable number.

198810668 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.

198810668 is a wasteful number, since it uses less digits than its factorization.

198810668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7100392 (or 7100390 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 47.

The square root of 198810668 is about 14100.0236879234. The cubic root of 198810668 is about 583.6420329250.

The spelling of 198810668 in words is "one hundred ninety-eight million, eight hundred ten thousand, six hundred sixty-eight".