198798017 has 16 divisors (see below), whose sum is σ = 230133312. Its totient is φ = 169720320.

The previous prime is 198798013. The next prime is 198798029. The reversal of 198798017 is 710897891.

It is not a de Polignac number, because 198798017 - 2² = 198798013 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198798013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114518 + ... + 116240.

It is an arithmetic number, because the mean of its divisors is an integer number (14383332).

Almost surely, 2^198798017 is an apocalyptic number.

198798017 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

198798017 is a deficient number, since it is larger than the sum of its proper divisors (31335295).

198798017 is a wasteful number, since it uses less digits than its factorization.

198798017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2368.

The product of its (nonzero) digits is 254016, while the sum is 50.

The square root of 198798017 is about 14099.5750645188. The cubic root of 198798017 is about 583.6296529522.

The spelling of 198798017 in words is "one hundred ninety-eight million, seven hundred ninety-eight thousand, seventeen".