66066072 has 32 divisors (see below), whose sum is σ = 165369600. Its totient is φ = 21994784.

The previous prime is 66066043. The next prime is 66066073. The reversal of 66066072 is 27066066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66066073) 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, 30613 + ... + 32699.

It is an arithmetic number, because the mean of its divisors is an integer number (5167800).

Almost surely, 2^66066072 is an apocalyptic number.

It is an amenable number.

66066072 is an abundant number, since it is smaller than the sum of its proper divisors (99303528).

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

66066072 is a wasteful number, since it uses less digits than its factorization.

66066072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3415 (or 3411 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 66066072 is about 8128.1038379194. The cubic root of 66066072 is about 404.2588120414.

The spelling of 66066072 in words is "sixty-six million, sixty-six thousand, seventy-two".