66000008 has 32 divisors (see below), whose sum is σ = 127695960. Its totient is φ = 31956480.

The previous prime is 66000007. The next prime is 66000013. The reversal of 66000008 is 80000066.

66000008 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 61748164 + 4251844 = 7858^2 + 2062^2 .

It is not an unprimeable number, because it can be changed into a prime (66000007) 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, 86348 + ... + 87108.

Almost surely, 2^66000008 is an apocalyptic number.

It is an amenable number.

66000008 is a deficient number, since it is larger than the sum of its proper divisors (61695952).

66000008 is a wasteful number, since it uses less digits than its factorization.

66000008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097 (or 1093 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 66000008 is about 8124.0388970019. The cubic root of 66000008 is about 404.1240183905.

The spelling of 66000008 in words is "sixty-six million, eight", and thus it is an aban number and an uban number.