168065 has 4 divisors (see below), whose sum is σ = 201684. Its totient is φ = 134448.

The previous prime is 168043. The next prime is 168067. The reversal of 168065 is 560861.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49729 + 118336 = 223^2 + 344^2 .

It is a cyclic number.

It is not a de Polignac number, because 168065 - 2⁸ = 167809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16802 + ... + 16811.

It is an arithmetic number, because the mean of its divisors is an integer number (50421).

2¹⁶⁸⁰⁶⁵ is an apocalyptic number.

It is an amenable number.

168065 is a deficient number, since it is larger than the sum of its proper divisors (33619).

168065 is an equidigital number, since it uses as much as digits as its factorization.

168065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33618.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 168065 is about 409.9573148512. The cubic root of 168065 is about 55.1855988827.

The spelling of 168065 in words is "one hundred sixty-eight thousand, sixty-five".