198897275 has 6 divisors (see below), whose sum is σ = 246632652. Its totient is φ = 159117800.

The previous prime is 198897247. The next prime is 198897313. The reversal of 198897275 is 572798891.

It is a de Polignac number, because none of the positive numbers 2^k-198897275 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 198897275.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3977921 + ... + 3977970.

It is an arithmetic number, because the mean of its divisors is an integer number (41105442).

Almost surely, 2^198897275 is an apocalyptic number.

198897275 is a deficient number, since it is larger than the sum of its proper divisors (47735377).

198897275 is an equidigital number, since it uses as much as digits as its factorization.

198897275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7955901 (or 7955896 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 56.

The square root of 198897275 is about 14103.0945185800. The cubic root of 198897275 is about 583.7267704090.

The spelling of 198897275 in words is "one hundred ninety-eight million, eight hundred ninety-seven thousand, two hundred seventy-five".