66011112 has 40 divisors (see below), whose sum is σ = 184894050. Its totient is φ = 22003488.

The previous prime is 66011093. The next prime is 66011123. The reversal of 66011112 is 21111066.

66011112 is a `hidden beast` number, since 660 + 1 + 1 + 1 + 1 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 61873956 + 4137156 = 7866^2 + 2034^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 50287 + ... + 51582.

Almost surely, 2^66011112 is an apocalyptic number.

It is an amenable number.

66011112 is an abundant number, since it is smaller than the sum of its proper divisors (118882938).

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

66011112 is a wasteful number, since it uses less digits than its factorization.

66011112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101887 (or 101874 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 66011112 is about 8124.7222721764. The cubic root of 66011112 is about 404.1466807184.

Adding to 66011112 its reverse (21111066), we get a palindrome (87122178).

The spelling of 66011112 in words is "sixty-six million, eleven thousand, one hundred twelve".