6886028666 has 8 divisors (see below), whose sum is σ = 11268046944. Its totient is φ = 3130013020.

The previous prime is 6886028647. The next prime is 6886028693. The reversal of 6886028666 is 6668206886.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156500630 + ... + 156500673.

It is an arithmetic number, because the mean of its divisors is an integer number (1408505868).

Almost surely, 2^6886028666 is an apocalyptic number.

6886028666 is a deficient number, since it is larger than the sum of its proper divisors (4382018278).

6886028666 is a wasteful number, since it uses less digits than its factorization.

6886028666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313001316.

The product of its (nonzero) digits is 7962624, while the sum is 56.

The square root of 6886028666 is about 82982.0984670790. The cubic root of 6886028666 is about 1902.4924506323.

The spelling of 6886028666 in words is "six billion, eight hundred eighty-six million, twenty-eight thousand, six hundred sixty-six".