66108012 has 12 divisors (see below), whose sum is σ = 154252056. Its totient is φ = 22036000.

The previous prime is 66108001. The next prime is 66108017. The reversal of 66108012 is 21080166.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (66108017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2754489 + ... + 2754512.

It is an arithmetic number, because the mean of its divisors is an integer number (12854338).

Almost surely, 2^66108012 is an apocalyptic number.

It is an amenable number.

66108012 is an abundant number, since it is smaller than the sum of its proper divisors (88144044).

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

66108012 is a wasteful number, since it uses less digits than its factorization.

66108012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5509008 (or 5509006 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 66108012 is about 8130.6833661138. The cubic root of 66108012 is about 404.3443376757.

Adding to 66108012 its reverse (21080166), we get a palindrome (87188178).

The spelling of 66108012 in words is "sixty-six million, one hundred eight thousand, twelve".