66466636 has 24 divisors (see below), whose sum is σ = 122823680. Its totient is φ = 31385232.

The previous prime is 66466607. The next prime is 66466643. The reversal of 66466636 is 63666466.

It is a junction number, because it is equal to n+sod(n) for n = 66466592 and 66466601.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26701 + ... + 29083.

Almost surely, 2^66466636 is an apocalyptic number.

It is an amenable number.

66466636 is a deficient number, since it is larger than the sum of its proper divisors (56357044).

66466636 is a wasteful number, since it uses less digits than its factorization.

66466636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2773 (or 2771 counting only the distinct ones).

The product of its digits is 559872, while the sum is 43.

The square root of 66466636 is about 8152.7072804069. The cubic root of 66466636 is about 405.0741844496.

The spelling of 66466636 in words is "sixty-six million, four hundred sixty-six thousand, six hundred thirty-six".