204111066 has 32 divisors (see below), whose sum is σ = 415029888. Its totient is φ = 66908160.

The previous prime is 204110999. The next prime is 204111071. The reversal of 204111066 is 660111402.

It is a super-2 number, since 2×204111066² = 83322654527312712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280395 + ... + 281121.

It is an arithmetic number, because the mean of its divisors is an integer number (12969684).

Almost surely, 2^204111066 is an apocalyptic number.

204111066 is an abundant number, since it is smaller than the sum of its proper divisors (210918822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204111066 is a wasteful number, since it uses less digits than its factorization.

204111066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 204111066 is about 14286.7444157163. The cubic root of 204111066 is about 588.7833455539.

Adding to 204111066 its reverse (660111402), we get a palindrome (864222468).

The spelling of 204111066 in words is "two hundred four million, one hundred eleven thousand, sixty-six".