198027297 has 12 divisors (see below), whose sum is σ = 308042644. Its totient is φ = 121862880.

The previous prime is 198027281. The next prime is 198027299. The reversal of 198027297 is 792720891.

It can be written as a sum of positive squares in 2 ways, for example, as 53450721 + 144576576 = 7311^2 + 12024^2 .

It is not a de Polignac number, because 198027297 - 2⁴ = 198027281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198027299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 846154 + ... + 846387.

Almost surely, 2^198027297 is an apocalyptic number.

It is an amenable number.

198027297 is a deficient number, since it is larger than the sum of its proper divisors (110015347).

198027297 is a wasteful number, since it uses less digits than its factorization.

198027297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1692560 (or 1692557 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 198027297 is about 14072.2172027012. The cubic root of 198027297 is about 582.8744515940.

The spelling of 198027297 in words is "one hundred ninety-eight million, twenty-seven thousand, two hundred ninety-seven".