170118 has 24 divisors (see below), whose sum is σ = 397488. Its totient is φ = 52272.

The previous prime is 170111. The next prime is 170123. The reversal of 170118 is 811071.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 170118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170111) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 130 + ... + 597.

It is an arithmetic number, because the mean of its divisors is an integer number (16562).

2¹⁷⁰¹¹⁸ is an apocalyptic number.

170118 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

170118 is an abundant number, since it is smaller than the sum of its proper divisors (227370).

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

170118 is a wasteful number, since it uses less digits than its factorization.

170118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748 (or 745 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 18.

The square root of 170118 is about 412.4536337578. The cubic root of 170118 is about 55.4093968516.

Adding to 170118 its reverse (811071), we get a palindrome (981189).

The spelling of 170118 in words is "one hundred seventy thousand, one hundred eighteen".