198597 has 16 divisors (see below), whose sum is σ = 310400. Its totient is φ = 112896.

The previous prime is 198593. The next prime is 198599. The reversal of 198597 is 795891.

It is a happy number.

198597 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 198597 - 2² = 198593 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198593) 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, 933 + ... + 1125.

It is an arithmetic number, because the mean of its divisors is an integer number (19400).

2¹⁹⁸⁵⁹⁷ is an apocalyptic number.

It is an amenable number.

198597 is a deficient number, since it is larger than the sum of its proper divisors (111803).

198597 is an equidigital number, since it uses as much as digits as its factorization.

198597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 203 counting only the distinct ones).

The product of its digits is 22680, while the sum is 39.

The square root of 198597 is about 445.6422331871. The cubic root of 198597 is about 58.3432871903.

The spelling of 198597 in words is "one hundred ninety-eight thousand, five hundred ninety-seven".