204328665 has 24 divisors (see below), whose sum is σ = 369570240. Its totient is φ = 104236704.

The previous prime is 204328643. The next prime is 204328669. The reversal of 204328665 is 566823402.

It is not a de Polignac number, because 204328665 - 2⁹ = 204328153 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (204328669) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97675 + ... + 99744.

It is an arithmetic number, because the mean of its divisors is an integer number (15398760).

Almost surely, 2^204328665 is an apocalyptic number.

It is an amenable number.

204328665 is a deficient number, since it is larger than the sum of its proper divisors (165241575).

204328665 is a wasteful number, since it uses less digits than its factorization.

204328665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197453 (or 197450 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 204328665 is about 14294.3578029935. The cubic root of 204328665 is about 588.9925015596.

The spelling of 204328665 in words is "two hundred four million, three hundred twenty-eight thousand, six hundred sixty-five".