163589 has 4 divisors (see below), whose sum is σ = 169260. Its totient is φ = 157920.

The previous prime is 163573. The next prime is 163601. The reversal of 163589 is 985361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 985361 = 13 ⋅75797.

It can be written as a sum of positive squares in 2 ways, for example, as 134689 + 28900 = 367^2 + 170^2 .

It is a cyclic number.

It is not a de Polignac number, because 163589 - 2⁴ = 163573 is a prime.

It is a super-2 number, since 2×163589² = 53522721842, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163789) 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, 2792 + ... + 2849.

It is an arithmetic number, because the mean of its divisors is an integer number (42315).

2¹⁶³⁵⁸⁹ is an apocalyptic number.

It is an amenable number.

163589 is a deficient number, since it is larger than the sum of its proper divisors (5671).

163589 is an equidigital number, since it uses as much as digits as its factorization.

163589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5670.

The product of its digits is 6480, while the sum is 32.

The square root of 163589 is about 404.4613702197. The cubic root of 163589 is about 54.6912730458.

The spelling of 163589 in words is "one hundred sixty-three thousand, five hundred eighty-nine".