168957 has 6 divisors (see below), whose sum is σ = 244062. Its totient is φ = 112632.

The previous prime is 168943. The next prime is 168977. The reversal of 168957 is 759861.

It can be written as a sum of positive squares in only one way, i.e., 168921 + 36 = 411^2 + 6^2 .

It is not a de Polignac number, because 168957 - 2⁶ = 168893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168937) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9378 + ... + 9395.

It is an arithmetic number, because the mean of its divisors is an integer number (40677).

2¹⁶⁸⁹⁵⁷ is an apocalyptic number.

It is an amenable number.

168957 is a deficient number, since it is larger than the sum of its proper divisors (75105).

168957 is a wasteful number, since it uses less digits than its factorization.

168957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18779 (or 18776 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 168957 is about 411.0437932873. The cubic root of 168957 is about 55.2830586401.

Subtracting from 168957 its sum of digits (36), we obtain a square (168921 = 411²).

The spelling of 168957 in words is "one hundred sixty-eight thousand, nine hundred fifty-seven".