204665013 has 48 divisors (see below), whose sum is σ = 347692800. Its totient is φ = 115958304.

The previous prime is 204665011. The next prime is 204665033. The reversal of 204665013 is 310566402.

204665013 is a `hidden beast` number, since 2 + 0 + 4 + 6 + 650 + 1 + 3 = 666.

204665013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 204665013 - 2¹ = 204665011 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204665011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 515331 + ... + 515727.

It is an arithmetic number, because the mean of its divisors is an integer number (7243600).

Almost surely, 2^204665013 is an apocalyptic number.

It is an amenable number.

204665013 is a deficient number, since it is larger than the sum of its proper divisors (143027787).

204665013 is a wasteful number, since it uses less digits than its factorization.

204665013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591 (or 574 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 204665013 is about 14306.1180269142. The cubic root of 204665013 is about 589.3155070589.

The spelling of 204665013 in words is "two hundred four million, six hundred sixty-five thousand, thirteen".