204040605 has 32 divisors (see below), whose sum is σ = 338042880. Its totient is φ = 104984640.

The previous prime is 204040589. The next prime is 204040649. The reversal of 204040605 is 506040402.

It is a happy number.

204040605 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 204040605 - 2⁴ = 204040589 is a prime.

It is a super-3 number, since 3×204040605³ (a number of 26 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 242776 + ... + 243614.

It is an arithmetic number, because the mean of its divisors is an integer number (10563840).

Almost surely, 2^204040605 is an apocalyptic number.

It is an amenable number.

204040605 is a deficient number, since it is larger than the sum of its proper divisors (134002275).

204040605 is a wasteful number, since it uses less digits than its factorization.

204040605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 204040605 is about 14284.2782456798. The cubic root of 204040605 is about 588.7155866308.

The spelling of 204040605 in words is "two hundred four million, forty thousand, six hundred five".