198315 has 32 divisors (see below), whose sum is σ = 383040. Its totient is φ = 96768.

The previous prime is 198313. The next prime is 198323. The reversal of 198315 is 513891.

198315 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 198315 - 2¹ = 198313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (198313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1699 + ... + 1811.

It is an arithmetic number, because the mean of its divisors is an integer number (11970).

2¹⁹⁸³¹⁵ is an apocalyptic number.

198315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

198315 is a deficient number, since it is larger than the sum of its proper divisors (184725).

198315 is a wasteful number, since it uses less digits than its factorization.

198315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140 (or 134 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 198315 is about 445.3257234879. The cubic root of 198315 is about 58.3156590445.

The spelling of 198315 in words is "one hundred ninety-eight thousand, three hundred fifteen".