66606060666 has 16 divisors (see below), whose sum is σ = 133268097888. Its totient is φ = 22192690800.

The previous prime is 66606060629. The next prime is 66606060667.

66606060666 is nontrivially palindromic in base 10.

66606060666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (66606060667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2316880 + ... + 2345451.

It is an arithmetic number, because the mean of its divisors is an integer number (8329256118).

Almost surely, 2^66606060666 is an apocalyptic number.

66606060666 is an abundant number, since it is smaller than the sum of its proper divisors (66662037222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66606060666 is a wasteful number, since it uses less digits than its factorization.

66606060666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4664717.

The product of its (nonzero) digits is 1679616, while the sum is 48.

The spelling of 66606060666 in words is "sixty-six billion, six hundred six million, sixty thousand, six hundred sixty-six".