204845723 has 2 divisors, whose sum is σ = 204845724. Its totient is φ = 204845722.

The previous prime is 204845713. The next prime is 204845749. The reversal of 204845723 is 327548402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204845723 - 2¹⁰ = 204844699 is a prime.

It is not a weakly prime, because it can be changed into another prime (204845713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102422861 + 102422862.

It is an arithmetic number, because the mean of its divisors is an integer number (102422862).

Almost surely, 2^204845723 is an apocalyptic number.

204845723 is a deficient number, since it is larger than the sum of its proper divisors (1).

204845723 is an equidigital number, since it uses as much as digits as its factorization.

204845723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53760, while the sum is 35.

The square root of 204845723 is about 14312.4324627227. The cubic root of 204845723 is about 589.4889023966.

The spelling of 204845723 in words is "two hundred four million, eight hundred forty-five thousand, seven hundred twenty-three".