204786668 has 12 divisors (see below), whose sum is σ = 358855392. Its totient is φ = 102256560.

The previous prime is 204786629. The next prime is 204786671. The reversal of 204786668 is 866687402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30788 + ... + 36843.

It is an arithmetic number, because the mean of its divisors is an integer number (29904616).

Almost surely, 2^204786668 is an apocalyptic number.

It is an amenable number.

204786668 is a deficient number, since it is larger than the sum of its proper divisors (154068724).

204786668 is a wasteful number, since it uses less digits than its factorization.

204786668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68392 (or 68390 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 47.

The square root of 204786668 is about 14310.3692475072. The cubic root of 204786668 is about 589.4322490080.

The spelling of 204786668 in words is "two hundred four million, seven hundred eighty-six thousand, six hundred sixty-eight".