66066066 has 24 divisors (see below), whose sum is σ = 156156624. Its totient is φ = 20019960.

The previous prime is 66066043. The next prime is 66066073.

66066066 is nontrivially palindromic in base 10.

66066066 is a modest number, since divided by 66066 gives 66 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 66066066.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166636 + ... + 167031.

It is an arithmetic number, because the mean of its divisors is an integer number (6506526).

Almost surely, 2^66066066 is an apocalyptic number.

66066066 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

66066066 is an abundant number, since it is smaller than the sum of its proper divisors (90090558).

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

66066066 is a wasteful number, since it uses less digits than its factorization.

66066066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333686 (or 333683 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 66066066 is about 8128.1034688296. The cubic root of 66066066 is about 404.2587998034.

The spelling of 66066066 in words is "sixty-six million, sixty-six thousand, sixty-six", and thus it is an eban number.