66068830 has 16 divisors (see below), whose sum is σ = 120358224. Its totient is φ = 26108800.

The previous prime is 66068819. The next prime is 66068831. The reversal of 66068830 is 3886066.

66068830 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 66068830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66068831) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 38971 + ... + 40630.

It is an arithmetic number, because the mean of its divisors is an integer number (7522389).

Almost surely, 2^66068830 is an apocalyptic number.

66068830 is a deficient number, since it is larger than the sum of its proper divisors (54289394).

66068830 is a wasteful number, since it uses less digits than its factorization.

66068830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79691.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 66068830 is about 8128.2734944144. The cubic root of 66068830 is about 404.2644373710.

The spelling of 66068830 in words is "sixty-six million, sixty-eight thousand, eight hundred thirty".