204320605 has 8 divisors (see below), whose sum is σ = 248638464. Its totient is φ = 161154000.

The previous prime is 204320591. The next prime is 204320647. The reversal of 204320605 is 506023402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 204320605 - 2¹¹ = 204318557 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 7 ways as a sum of consecutive naturals, for example, 287421 + ... + 288130.

It is an arithmetic number, because the mean of its divisors is an integer number (31079808).

Almost surely, 2^204320605 is an apocalyptic number.

It is an amenable number.

204320605 is a deficient number, since it is larger than the sum of its proper divisors (44317859).

204320605 is an equidigital number, since it uses as much as digits as its factorization.

204320605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575627.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 204320605 is about 14294.0758707935. The cubic root of 204320605 is about 588.9847569422.

The spelling of 204320605 in words is "two hundred four million, three hundred twenty thousand, six hundred five".