198660872 has 16 divisors (see below), whose sum is σ = 372924240. Its totient is φ = 99214416.

The previous prime is 198660853. The next prime is 198660887. The reversal of 198660872 is 278066891.

198660872 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 2×198660872² = 78932284127600768, which contains 22 as substring.

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, 6998 + ... + 21125.

It is an arithmetic number, because the mean of its divisors is an integer number (23307765).

Almost surely, 2^198660872 is an apocalyptic number.

It is an amenable number.

198660872 is a deficient number, since it is larger than the sum of its proper divisors (174263368).

198660872 is a wasteful number, since it uses less digits than its factorization.

198660872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29012 (or 29008 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 198660872 is about 14094.7107809987. The cubic root of 198660872 is about 583.4954123409.

The spelling of 198660872 in words is "one hundred ninety-eight million, six hundred sixty thousand, eight hundred seventy-two".