66885204 has 12 divisors (see below), whose sum is σ = 156065504. Its totient is φ = 22295064.

The previous prime is 66885193. The next prime is 66885209. The reversal of 66885204 is 40258866.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66885209) 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, 2786872 + ... + 2786895.

Almost surely, 2^66885204 is an apocalyptic number.

It is an amenable number.

66885204 is an abundant number, since it is smaller than the sum of its proper divisors (89180300).

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

66885204 is a wasteful number, since it uses less digits than its factorization.

66885204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5573774 (or 5573772 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 66885204 is about 8178.3374838655. The cubic root of 66885204 is about 405.9227125242.

The spelling of 66885204 in words is "sixty-six million, eight hundred eighty-five thousand, two hundred four".