666304884 has 36 divisors (see below), whose sum is σ = 1924881504. Its totient is φ = 190372752.

The previous prime is 666304879. The next prime is 666304897. The reversal of 666304884 is 488403666.

666304884 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1321782 + ... + 1322285.

Almost surely, 2^666304884 is an apocalyptic number.

It is an amenable number.

666304884 is an abundant number, since it is smaller than the sum of its proper divisors (1258576620).

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

666304884 is a wasteful number, since it uses less digits than its factorization.

666304884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2644084 (or 2644079 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The square root of 666304884 is about 25812.8821327646. The cubic root of 666304884 is about 873.4224130076.

The spelling of 666304884 in words is "six hundred sixty-six million, three hundred four thousand, eight hundred eighty-four".