204668911 has 2 divisors, whose sum is σ = 204668912. Its totient is φ = 204668910.

The previous prime is 204668909. The next prime is 204668923. The reversal of 204668911 is 119866402.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204668911 - 2¹ = 204668909 is a prime.

Together with 204668909, 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 (204668951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102334455 + 102334456.

It is an arithmetic number, because the mean of its divisors is an integer number (102334456).

Almost surely, 2^204668911 is an apocalyptic number.

204668911 is a deficient number, since it is larger than the sum of its proper divisors (1).

204668911 is an equidigital number, since it uses as much as digits as its factorization.

204668911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 204668911 is about 14306.2542616857. The cubic root of 204668911 is about 589.3192483550.

The spelling of 204668911 in words is "two hundred four million, six hundred sixty-eight thousand, nine hundred eleven".