6668008871 has 2 divisors, whose sum is σ = 6668008872. Its totient is φ = 6668008870.

The previous prime is 6668008859. The next prime is 6668008969. The reversal of 6668008871 is 1788008666.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6668008871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6668008471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3334004435 + 3334004436.

It is an arithmetic number, because the mean of its divisors is an integer number (3334004436).

Almost surely, 2^6668008871 is an apocalyptic number.

6668008871 is a deficient number, since it is larger than the sum of its proper divisors (1).

6668008871 is an equidigital number, since it uses as much as digits as its factorization.

6668008871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 774144, while the sum is 50.

The square root of 6668008871 is about 81657.8769684836. The cubic root of 6668008871 is about 1882.1983555501.

The spelling of 6668008871 in words is "six billion, six hundred sixty-eight million, eight thousand, eight hundred seventy-one".