198359 has 8 divisors (see below), whose sum is σ = 232320. Its totient is φ = 165816.

The previous prime is 198349. The next prime is 198377. The reversal of 198359 is 953891.

198359 = 87² + 88² + ... + 107².

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 198359 - 2¹² = 194263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 198359.

It is not an unprimeable number, because it can be changed into a prime (198349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29 + ... + 630.

It is an arithmetic number, because the mean of its divisors is an integer number (29040).

2¹⁹⁸³⁵⁹ is an apocalyptic number.

198359 is a deficient number, since it is larger than the sum of its proper divisors (33961).

198359 is an equidigital number, since it uses as much as digits as its factorization.

198359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709.

The product of its digits is 9720, while the sum is 35.

The square root of 198359 is about 445.3751227898. The cubic root of 198359 is about 58.3199715428.

The spelling of 198359 in words is "one hundred ninety-eight thousand, three hundred fifty-nine".