204017623 has 2 divisors, whose sum is σ = 204017624. Its totient is φ = 204017622.

The previous prime is 204017621. The next prime is 204017633. The reversal of 204017623 is 326710402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204017623 - 2¹ = 204017621 is a prime.

Together with 204017621, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204017621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102008811 + 102008812.

It is an arithmetic number, because the mean of its divisors is an integer number (102008812).

Almost surely, 2^204017623 is an apocalyptic number.

204017623 is a deficient number, since it is larger than the sum of its proper divisors (1).

204017623 is an equidigital number, since it uses as much as digits as its factorization.

204017623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 204017623 is about 14283.4737721606. The cubic root of 204017623 is about 588.6934825834.

The spelling of 204017623 in words is "two hundred four million, seventeen thousand, six hundred twenty-three".