168945 has 16 divisors (see below), whose sum is σ = 309120. Its totient is φ = 77184.

The previous prime is 168943. The next prime is 168977. The reversal of 168945 is 549861.

It is not a de Polignac number, because 168945 - 2¹ = 168943 is a prime.

It is a Curzon number.

168945 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (168943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 700 + ... + 909.

It is an arithmetic number, because the mean of its divisors is an integer number (19320).

2¹⁶⁸⁹⁴⁵ is an apocalyptic number.

168945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

168945 is a deficient number, since it is larger than the sum of its proper divisors (140175).

168945 is a wasteful number, since it uses less digits than its factorization.

168945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1624.

The product of its digits is 8640, while the sum is 33.

The square root of 168945 is about 411.0291960433. The cubic root of 168945 is about 55.2817498013.

The spelling of 168945 in words is "one hundred sixty-eight thousand, nine hundred forty-five".