204564085 has 8 divisors (see below), whose sum is σ = 267793056. Its totient is φ = 148773840.

The previous prime is 204564067. The next prime is 204564109. The reversal of 204564085 is 580465402.

204564085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 204564085 - 2²¹ = 202466933 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204564085.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1859619 + ... + 1859728.

It is an arithmetic number, because the mean of its divisors is an integer number (33474132).

Almost surely, 2^204564085 is an apocalyptic number.

It is an amenable number.

204564085 is a deficient number, since it is larger than the sum of its proper divisors (63228971).

204564085 is a wasteful number, since it uses less digits than its factorization.

204564085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3719363.

The product of its (nonzero) digits is 38400, while the sum is 34.

The square root of 204564085 is about 14302.5901500393. The cubic root of 204564085 is about 589.2186199321.

The spelling of 204564085 in words is "two hundred four million, five hundred sixty-four thousand, eighty-five".