66111116 has 12 divisors (see below), whose sum is σ = 116756640. Its totient is φ = 32752080.

The previous prime is 66111109. The next prime is 66111163. The reversal of 66111116 is 61111166.

66111116 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 66111091 and 66111100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75380 + ... + 76251.

It is an arithmetic number, because the mean of its divisors is an integer number (9729720).

Almost surely, 2^66111116 is an apocalyptic number.

It is an amenable number.

66111116 is a deficient number, since it is larger than the sum of its proper divisors (50645524).

66111116 is a wasteful number, since it uses less digits than its factorization.

66111116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151744 (or 151742 counting only the distinct ones).

The product of its digits is 216, while the sum is 23.

The square root of 66111116 is about 8130.8742457377. The cubic root of 66111116 is about 404.3506660321.

The spelling of 66111116 in words is "sixty-six million, one hundred eleven thousand, one hundred sixteen".