6881336668 has 6 divisors (see below), whose sum is σ = 12042339176. Its totient is φ = 3440668332.

The previous prime is 6881336663. The next prime is 6881336681. The reversal of 6881336668 is 8666331886.

It is a super-2 number, since 2×6881336668² = 94705588676722684448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6881336663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 860167080 + ... + 860167087.

Almost surely, 2^6881336668 is an apocalyptic number.

It is an amenable number.

6881336668 is a deficient number, since it is larger than the sum of its proper divisors (5161002508).

6881336668 is a wasteful number, since it uses less digits than its factorization.

6881336668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1720334171 (or 1720334169 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 55.

The square root of 6881336668 is about 82953.8225038485. The cubic root of 6881336668 is about 1902.0602460716.

The spelling of 6881336668 in words is "six billion, eight hundred eighty-one million, three hundred thirty-six thousand, six hundred sixty-eight".