198798 has 16 divisors (see below), whose sum is σ = 421200. Its totient is φ = 62336.

The previous prime is 198769. The next prime is 198811. The reversal of 198798 is 897891.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 873 + ... + 1076.

It is an arithmetic number, because the mean of its divisors is an integer number (26325).

2¹⁹⁸⁷⁹⁸ is an apocalyptic number.

198798 is an abundant number, since it is smaller than the sum of its proper divisors (222402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

198798 is a wasteful number, since it uses less digits than its factorization.

198798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1971.

The product of its digits is 36288, while the sum is 42.

The square root of 198798 is about 445.8676933800. The cubic root of 198798 is about 58.3629636316.

The spelling of 198798 in words is "one hundred ninety-eight thousand, seven hundred ninety-eight".