66330868 has 12 divisors (see below), whose sum is σ = 118046880. Its totient is φ = 32603192.

The previous prime is 66330857. The next prime is 66330947. The reversal of 66330868 is 86803366.

66330868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 66330868.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 140296 + ... + 140767.

It is an arithmetic number, because the mean of its divisors is an integer number (9837240).

Almost surely, 2^66330868 is an apocalyptic number.

It is an amenable number.

66330868 is a deficient number, since it is larger than the sum of its proper divisors (51716012).

66330868 is a wasteful number, since it uses less digits than its factorization.

66330868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281126 (or 281124 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 66330868 is about 8144.3764647762. The cubic root of 66330868 is about 404.7981883326.

The spelling of 66330868 in words is "sixty-six million, three hundred thirty thousand, eight hundred sixty-eight".