204656013 has 12 divisors (see below), whose sum is σ = 313003548. Its totient is φ = 128411520.

The previous prime is 204656003. The next prime is 204656029. The reversal of 204656013 is 310656402.

204656013 is a `hidden beast` number, since 2 + 0 + 4 + 656 + 0 + 1 + 3 = 666.

204656013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 132779529 + 71876484 = 11523^2 + 8478^2 .

It is not a de Polignac number, because 204656013 - 2⁵ = 204655981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204656003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 668658 + ... + 668963.

It is an arithmetic number, because the mean of its divisors is an integer number (26083629).

Almost surely, 2^204656013 is an apocalyptic number.

It is an amenable number.

204656013 is a deficient number, since it is larger than the sum of its proper divisors (108347535).

204656013 is a wasteful number, since it uses less digits than its factorization.

204656013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337644 (or 1337641 counting only the distinct ones).

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

The square root of 204656013 is about 14305.8034727169. The cubic root of 204656013 is about 589.3068686873.

The spelling of 204656013 in words is "two hundred four million, six hundred fifty-six thousand, thirteen".