204811085 has 8 divisors (see below), whose sum is σ = 246157056. Its totient is φ = 163593040.

The previous prime is 204811081. The next prime is 204811091. The reversal of 204811085 is 580118402.

204811085 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 204811085 - 2² = 204811081 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 (204811081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28421 + ... + 34890.

It is an arithmetic number, because the mean of its divisors is an integer number (30769632).

Almost surely, 2^204811085 is an apocalyptic number.

It is an amenable number.

204811085 is a deficient number, since it is larger than the sum of its proper divisors (41345971).

204811085 is an equidigital number, since it uses as much as digits as its factorization.

204811085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63963.

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 204811085 is about 14311.2223447195. Note that the first 3 decimals coincide. The cubic root of 204811085 is about 589.4556743534.

Adding to 204811085 its reverse (580118402), we get a palindrome (784929487).

The spelling of 204811085 in words is "two hundred four million, eight hundred eleven thousand, eighty-five".