6668868727 has 2 divisors, whose sum is σ = 6668868728. Its totient is φ = 6668868726.

The previous prime is 6668868673. The next prime is 6668868733. The reversal of 6668868727 is 7278688666.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6668868727 - 2¹¹ = 6668866679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6668868757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3334434363 + 3334434364.

It is an arithmetic number, because the mean of its divisors is an integer number (3334434364).

Almost surely, 2^6668868727 is an apocalyptic number.

6668868727 is a deficient number, since it is larger than the sum of its proper divisors (1).

6668868727 is an equidigital number, since it uses as much as digits as its factorization.

6668868727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 65028096, while the sum is 64.

The square root of 6668868727 is about 81663.1417899165. The cubic root of 6668868727 is about 1882.2792567616.

The spelling of 6668868727 in words is "six billion, six hundred sixty-eight million, eight hundred sixty-eight thousand, seven hundred twenty-seven".