6666680068 has 12 divisors (see below), whose sum is σ = 11672179792. Its totient is φ = 3331771560.

The previous prime is 6666680021. The next prime is 6666680087. The reversal of 6666680068 is 8600866666.

It is a junction number, because it is equal to n+sod(n) for n = 6666679997 and 6666680024.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 382530 + ... + 399577.

Almost surely, 2^6666680068 is an apocalyptic number.

It is an amenable number.

6666680068 is a deficient number, since it is larger than the sum of its proper divisors (5005499724).

6666680068 is a wasteful number, since it uses less digits than its factorization.

6666680068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784242 (or 784240 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 52.

The square root of 6666680068 is about 81649.7401588027. The cubic root of 6666680068 is about 1882.0733188750.

The spelling of 6666680068 in words is "six billion, six hundred sixty-six million, six hundred eighty thousand, sixty-eight".