162689 has 4 divisors (see below), whose sum is σ = 167124. Its totient is φ = 158256.

The previous prime is 162683. The next prime is 162691. The reversal of 162689 is 986261.

162689 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 115600 + 47089 = 340^2 + 217^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (162683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2162 + ... + 2235.

It is an arithmetic number, because the mean of its divisors is an integer number (41781).

2¹⁶²⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

162689 is a deficient number, since it is larger than the sum of its proper divisors (4435).

162689 is an equidigital number, since it uses as much as digits as its factorization.

162689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4434.

The product of its digits is 5184, while the sum is 32.

The square root of 162689 is about 403.3472449391. The cubic root of 162689 is about 54.5907921875.

The spelling of 162689 in words is "one hundred sixty-two thousand, six hundred eighty-nine".