66388882 has 8 divisors (see below), whose sum is σ = 113809536. Its totient is φ = 28452372.

The previous prime is 66388873. The next prime is 66388891. The reversal of 66388882 is 28888366.

66388882 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 (66388873) and next prime (66388891).

It is a sphenic number, since it is the product of 3 distinct primes.

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, 2371018 + ... + 2371045.

It is an arithmetic number, because the mean of its divisors is an integer number (14226192).

Almost surely, 2^66388882 is an apocalyptic number.

66388882 is a deficient number, since it is larger than the sum of its proper divisors (47420654).

66388882 is a wasteful number, since it uses less digits than its factorization.

66388882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4742072.

The product of its digits is 884736, while the sum is 49.

The square root of 66388882 is about 8147.9372849820. The cubic root of 66388882 is about 404.9161681895.

The spelling of 66388882 in words is "sixty-six million, three hundred eighty-eight thousand, eight hundred eighty-two".