66164512 has 24 divisors (see below), whose sum is σ = 130844700. Its totient is φ = 32934144.

The previous prime is 66164503. The next prime is 66164513. The reversal of 66164512 is 21546166.

66164512 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 2 ways, for example, as 43086096 + 23078416 = 6564^2 + 4804^2 .

It is not an unprimeable number, because it can be changed into a prime (66164513) 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 3 ways as a sum of consecutive naturals, for example, 2814 + ... + 11842.

Almost surely, 2^66164512 is an apocalyptic number.

It is an amenable number.

66164512 is a deficient number, since it is larger than the sum of its proper divisors (64680188).

66164512 is a wasteful number, since it uses less digits than its factorization.

66164512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9268 (or 9260 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 66164512 is about 8134.1571167516. The cubic root of 66164512 is about 404.4594974428.

The spelling of 66164512 in words is "sixty-six million, one hundred sixty-four thousand, five hundred twelve".