66668304 has 40 divisors (see below), whose sum is σ = 173303392. Its totient is φ = 22083840.

The previous prime is 66668299. The next prime is 66668309. The reversal of 66668304 is 40386666.

66668304 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (66668299) and next prime (66668309).

It is not an unprimeable number, because it can be changed into a prime (66668309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3564 + ... + 12084.

Almost surely, 2^66668304 is an apocalyptic number.

It is an amenable number.

66668304 is an abundant number, since it is smaller than the sum of its proper divisors (106635088).

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

66668304 is a wasteful number, since it uses less digits than its factorization.

66668304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8695 (or 8689 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 39.

The square root of 66668304 is about 8165.0660744418. The cubic root of 66668304 is about 405.4834525417.

The spelling of 66668304 in words is "sixty-six million, six hundred sixty-eight thousand, three hundred four".