204040066 has 8 divisors (see below), whose sum is σ = 312572160. Its totient is φ = 99849348.

The previous prime is 204040063. The next prime is 204040093. The reversal of 204040066 is 660040402.

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 (204040063) 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, 1085226 + ... + 1085413.

It is an arithmetic number, because the mean of its divisors is an integer number (39071520).

Almost surely, 2^204040066 is an apocalyptic number.

204040066 is a deficient number, since it is larger than the sum of its proper divisors (108532094).

204040066 is a wasteful number, since it uses less digits than its factorization.

204040066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2170688.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 204040066 is about 14284.2593787707. The cubic root of 204040066 is about 588.7150682406.

Adding to 204040066 its reverse (660040402), we get a palindrome (864080468).

The spelling of 204040066 in words is "two hundred four million, forty thousand, sixty-six".