204103605 has 32 divisors (see below), whose sum is σ = 346521600. Its totient is φ = 102295872.

The previous prime is 204103591. The next prime is 204103609. The reversal of 204103605 is 506301402.

It is a happy number.

It is not a de Polignac number, because 204103605 - 2⁴ = 204103589 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 (204103609) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33376 + ... + 39014.

It is an arithmetic number, because the mean of its divisors is an integer number (10828800).

Almost surely, 2^204103605 is an apocalyptic number.

It is an amenable number.

204103605 is a deficient number, since it is larger than the sum of its proper divisors (142417995).

204103605 is a wasteful number, since it uses less digits than its factorization.

204103605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5793.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 204103605 is about 14286.4832971589. The cubic root of 204103605 is about 588.7761714106.

The spelling of 204103605 in words is "two hundred four million, one hundred three thousand, six hundred five".