66412868 has 24 divisors (see below), whose sum is σ = 122653440. Its totient is φ = 31401920.

The previous prime is 66412849. The next prime is 66412873. The reversal of 66412868 is 86821466.

66412868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 4133 + ... + 12243.

It is an arithmetic number, because the mean of its divisors is an integer number (5110560).

Almost surely, 2^66412868 is an apocalyptic number.

It is an amenable number.

66412868 is a deficient number, since it is larger than the sum of its proper divisors (56240572).

66412868 is a wasteful number, since it uses less digits than its factorization.

66412868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8227 (or 8225 counting only the distinct ones).

The product of its digits is 110592, while the sum is 41.

The square root of 66412868 is about 8149.4090583305. The cubic root of 66412868 is about 404.9649271055.

The spelling of 66412868 in words is "sixty-six million, four hundred twelve thousand, eight hundred sixty-eight".