198627993 has 12 divisors (see below), whose sum is σ = 287118000. Its totient is φ = 132321336.

The previous prime is 198627971. The next prime is 198628007. The reversal of 198627993 is 399726891.

198627993 is a `hidden beast` number, since 1 + 9 + 8 + 627 + 9 + 9 + 3 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-198627993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (198627953) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6130 + ... + 20852.

It is an arithmetic number, because the mean of its divisors is an integer number (23926500).

Almost surely, 2^198627993 is an apocalyptic number.

It is an amenable number.

198627993 is a deficient number, since it is larger than the sum of its proper divisors (88490007).

198627993 is a wasteful number, since it uses less digits than its factorization.

198627993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16228 (or 16225 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 54.

The square root of 198627993 is about 14093.5443732228. The cubic root of 198627993 is about 583.4632204554.

The spelling of 198627993 in words is "one hundred ninety-eight million, six hundred twenty-seven thousand, nine hundred ninety-three".