66066604 has 12 divisors (see below), whose sum is σ = 115983504. Its totient is φ = 32928464.

The previous prime is 66066587. The next prime is 66066617. The reversal of 66066604 is 40666066.

It is a self number, because there is not a number n which added to its sum of digits gives 66066604.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24784 + ... + 27319.

It is an arithmetic number, because the mean of its divisors is an integer number (9665292).

Almost surely, 2^66066604 is an apocalyptic number.

It is an amenable number.

66066604 is a deficient number, since it is larger than the sum of its proper divisors (49916900).

66066604 is a wasteful number, since it uses less digits than its factorization.

66066604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52424 (or 52422 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 66066604 is about 8128.1365638134. The cubic root of 66066604 is about 404.2598971426.

The spelling of 66066604 in words is "sixty-six million, sixty-six thousand, six hundred four".