204111664 has 10 divisors (see below), whose sum is σ = 395466380. Its totient is φ = 102055824.

The previous prime is 204111659. The next prime is 204111667. The reversal of 204111664 is 466111402.

204111664 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (204111667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6378474 + ... + 6378505.

It is an arithmetic number, because the mean of its divisors is an integer number (39546638).

Almost surely, 2^204111664 is an apocalyptic number.

It is an amenable number.

204111664 is a deficient number, since it is larger than the sum of its proper divisors (191354716).

204111664 is a wasteful number, since it uses less digits than its factorization.

204111664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12756987 (or 12756981 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 204111664 is about 14286.7653441918. The cubic root of 204111664 is about 588.7839205547.

The spelling of 204111664 in words is "two hundred four million, one hundred eleven thousand, six hundred sixty-four".