66068780 has 12 divisors (see below), whose sum is σ = 138744480. Its totient is φ = 26427504.

The previous prime is 66068777. The next prime is 66068809. The reversal of 66068780 is 8786066.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1651700 + ... + 1651739.

It is an arithmetic number, because the mean of its divisors is an integer number (11562040).

Almost surely, 2^66068780 is an apocalyptic number.

It is an amenable number.

66068780 is an abundant number, since it is smaller than the sum of its proper divisors (72675700).

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

66068780 is a wasteful number, since it uses less digits than its factorization.

66068780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3303448 (or 3303446 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 66068780 is about 8128.2704187299. The cubic root of 66068780 is about 404.2643353903.

The spelling of 66068780 in words is "sixty-six million, sixty-eight thousand, seven hundred eighty".