66000204 has 24 divisors (see below), whose sum is σ = 171111920. Its totient is φ = 22000032.

The previous prime is 66000203. The next prime is 66000217. The reversal of 66000204 is 40200066.

66000204 is a `hidden beast` number, since 660 + 0 + 0 + 2 + 0 + 4 = 666.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (66000203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305449 + ... + 305664.

Almost surely, 2^66000204 is an apocalyptic number.

It is an amenable number.

66000204 is an abundant number, since it is smaller than the sum of its proper divisors (105111716).

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

66000204 is a wasteful number, since it uses less digits than its factorization.

66000204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611126 (or 611118 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 66000204 is about 8124.0509599583. The cubic root of 66000204 is about 404.1244184320.

The spelling of 66000204 in words is "sixty-six million, two hundred four", and thus it is an aban number.