204143666 has 8 divisors (see below), whose sum is σ = 306317424. Its totient is φ = 102037860.

The previous prime is 204143647. The next prime is 204143669. The reversal of 204143666 is 666341402.

204143666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (204143669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8660 + ... + 21983.

It is an arithmetic number, because the mean of its divisors is an integer number (38289678).

Almost surely, 2^204143666 is an apocalyptic number.

204143666 is a deficient number, since it is larger than the sum of its proper divisors (102173758).

204143666 is a wasteful number, since it uses less digits than its factorization.

204143666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33976.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 204143666 is about 14287.8852878934. The cubic root of 204143666 is about 588.8146901149.

The spelling of 204143666 in words is "two hundred four million, one hundred forty-three thousand, six hundred sixty-six".