66147112 has 8 divisors (see below), whose sum is σ = 124025850. Its totient is φ = 33073552.

The previous prime is 66147097. The next prime is 66147131. The reversal of 66147112 is 21174166.

66147112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 57062916 + 9084196 = 7554^2 + 3014^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 4134187 + ... + 4134202.

Almost surely, 2^66147112 is an apocalyptic number.

It is an amenable number.

66147112 is a deficient number, since it is larger than the sum of its proper divisors (57878738).

66147112 is a wasteful number, since it uses less digits than its factorization.

66147112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8268395 (or 8268391 counting only the distinct ones).

The product of its digits is 2016, while the sum is 28.

The square root of 66147112 is about 8133.0874826231. The cubic root of 66147112 is about 404.4240392994.

The spelling of 66147112 in words is "sixty-six million, one hundred forty-seven thousand, one hundred twelve".