165198 has 16 divisors (see below), whose sum is σ = 360576. Its totient is φ = 50040.

The previous prime is 165181. The next prime is 165203. The reversal of 165198 is 891561.

It is a happy number.

165198 is nontrivially palindromic in base 15.

It is a congruent number.

It is an unprimeable number.

165198 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1186 + ... + 1317.

It is an arithmetic number, because the mean of its divisors is an integer number (22536).

2¹⁶⁵¹⁹⁸ is an apocalyptic number.

165198 is an abundant number, since it is smaller than the sum of its proper divisors (195378).

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

165198 is a wasteful number, since it uses less digits than its factorization.

165198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2519.

The product of its digits is 2160, while the sum is 30.

The square root of 165198 is about 406.4455683114. The cubic root of 165198 is about 54.8699959807.

It can be divided in two parts, 165 and 198, that added together give a palindrome (363).

The spelling of 165198 in words is "one hundred sixty-five thousand, one hundred ninety-eight".