6668868722 has 16 divisors (see below), whose sum is σ = 10443176640. Its totient is φ = 3187947312.

The previous prime is 6668868673. The next prime is 6668868727. The reversal of 6668868722 is 2278688666.

It is not an unprimeable number, because it can be changed into a prime (6668868727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66968 + ... + 133500.

It is an arithmetic number, because the mean of its divisors is an integer number (652698540).

Almost surely, 2^6668868722 is an apocalyptic number.

6668868722 is a deficient number, since it is larger than the sum of its proper divisors (3774307918).

6668868722 is a wasteful number, since it uses less digits than its factorization.

6668868722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68737.

The product of its digits is 18579456, while the sum is 59.

The square root of 6668868722 is about 81663.1417593029. The cubic root of 6668868722 is about 1882.2792562912.

The spelling of 6668868722 in words is "six billion, six hundred sixty-eight million, eight hundred sixty-eight thousand, seven hundred twenty-two".