66133768 has 16 divisors (see below), whose sum is σ = 124220880. Its totient is φ = 33008208.

The previous prime is 66133751. The next prime is 66133783. The reversal of 66133768 is 86733166.

66133768 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 66133768.

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, 2346 + ... + 11737.

It is an arithmetic number, because the mean of its divisors is an integer number (7763805).

Almost surely, 2^66133768 is an apocalyptic number.

It is an amenable number.

66133768 is a deficient number, since it is larger than the sum of its proper divisors (58087112).

66133768 is a wasteful number, since it uses less digits than its factorization.

66133768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14676 (or 14672 counting only the distinct ones).

The product of its digits is 108864, while the sum is 40.

The square root of 66133768 is about 8132.2670885799. The cubic root of 66133768 is about 404.3968423583.

The spelling of 66133768 in words is "sixty-six million, one hundred thirty-three thousand, seven hundred sixty-eight".