162865 has 4 divisors (see below), whose sum is σ = 195444. Its totient is φ = 130288.

The previous prime is 162859. The next prime is 162881. The reversal of 162865 is 568261.

162865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 20736 + 142129 = 144^2 + 377^2 .

It is a cyclic number.

It is not a de Polignac number, because 162865 - 2¹¹ = 160817 is a prime.

It is a Duffinian number.

162865 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16282 + ... + 16291.

It is an arithmetic number, because the mean of its divisors is an integer number (48861).

2¹⁶²⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

162865 is a deficient number, since it is larger than the sum of its proper divisors (32579).

162865 is an equidigital number, since it uses as much as digits as its factorization.

162865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32578.

The product of its digits is 2880, while the sum is 28.

The square root of 162865 is about 403.5653602578. The cubic root of 162865 is about 54.6104708726.

The spelling of 162865 in words is "one hundred sixty-two thousand, eight hundred sixty-five".