66012196 has 12 divisors (see below), whose sum is σ = 115718400. Its totient is φ = 32949800.

The previous prime is 66012169. The next prime is 66012203. The reversal of 66012196 is 69121066.

66012196 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×66012196² = 8715220041484832, which contains 22 as substring.

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, 11380 + ... + 16171.

It is an arithmetic number, because the mean of its divisors is an integer number (9643200).

Almost surely, 2^66012196 is an apocalyptic number.

It is an amenable number.

66012196 is a deficient number, since it is larger than the sum of its proper divisors (49706204).

66012196 is a wasteful number, since it uses less digits than its factorization.

66012196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28154 (or 28152 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 66012196 is about 8124.7889818752. The cubic root of 66012196 is about 404.1488929348.

The spelling of 66012196 in words is "sixty-six million, twelve thousand, one hundred ninety-six".