204716005 has 16 divisors (see below), whose sum is σ = 271709424. Its totient is φ = 147087360.

The previous prime is 204715981. The next prime is 204716011. The reversal of 204716005 is 500617402.

It can be written as a sum of positive squares in 8 ways, for example, as 9443329 + 195272676 = 3073^2 + 13974^2 .

It is not a de Polignac number, because 204716005 - 2¹³ = 204707813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40156 + ... + 44965.

It is an arithmetic number, because the mean of its divisors is an integer number (16981839).

Almost surely, 2^204716005 is an apocalyptic number.

It is an amenable number.

204716005 is a deficient number, since it is larger than the sum of its proper divisors (66993419).

204716005 is a wasteful number, since it uses less digits than its factorization.

204716005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85176.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 204716005 is about 14307.9000905094. The cubic root of 204716005 is about 589.3644453712.

The spelling of 204716005 in words is "two hundred four million, seven hundred sixteen thousand, five".