204589 has 8 divisors (see below), whose sum is σ = 255168. Its totient is φ = 159360.

The previous prime is 204587. The next prime is 204599. The reversal of 204589 is 985402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 204589 - 2¹ = 204587 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1252 + ... + 1405.

It is an arithmetic number, because the mean of its divisors is an integer number (31896).

2²⁰⁴⁵⁸⁹ is an apocalyptic number.

It is an amenable number.

204589 is a deficient number, since it is larger than the sum of its proper divisors (50579).

204589 is a wasteful number, since it uses less digits than its factorization.

204589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2675.

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

The square root of 204589 is about 452.3151556161. The cubic root of 204589 is about 58.9242540367.

The spelling of 204589 in words is "two hundred four thousand, five hundred eighty-nine".