198717275 has 6 divisors (see below), whose sum is σ = 246409452. Its totient is φ = 158973800.

The previous prime is 198717247. The next prime is 198717287. The reversal of 198717275 is 572717891.

It is a de Polignac number, because none of the positive numbers 2^k-198717275 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3974321 + ... + 3974370.

It is an arithmetic number, because the mean of its divisors is an integer number (41068242).

Almost surely, 2^198717275 is an apocalyptic number.

198717275 is a deficient number, since it is larger than the sum of its proper divisors (47692177).

198717275 is an equidigital number, since it uses as much as digits as its factorization.

198717275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7948701 (or 7948696 counting only the distinct ones).

The product of its digits is 246960, while the sum is 47.

The square root of 198717275 is about 14096.7114959483. The cubic root of 198717275 is about 583.5506283434.

The spelling of 198717275 in words is "one hundred ninety-eight million, seven hundred seventeen thousand, two hundred seventy-five".