198556227 has 6 divisors (see below), whose sum is σ = 286803452. Its totient is φ = 132370812.

The previous prime is 198556223. The next prime is 198556249. The reversal of 198556227 is 722655891.

198556227 is a `hidden beast` number, since 1 + 9 + 85 + 562 + 2 + 7 = 666.

It is not a de Polignac number, because 198556227 - 2² = 198556223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198556223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11030893 + ... + 11030910.

Almost surely, 2^198556227 is an apocalyptic number.

198556227 is a deficient number, since it is larger than the sum of its proper divisors (88247225).

198556227 is a wasteful number, since it uses less digits than its factorization.

198556227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22061809 (or 22061806 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 198556227 is about 14090.9980838832. The cubic root of 198556227 is about 583.3929418996.

The spelling of 198556227 in words is "one hundred ninety-eight million, five hundred fifty-six thousand, two hundred twenty-seven".