6886666885 has 16 divisors (see below), whose sum is σ = 9674929152. Its totient is φ = 4607107200.

The previous prime is 6886666861. The next prime is 6886666931. The reversal of 6886666885 is 5886666886.

It is not a de Polignac number, because 6886666885 - 2³¹ = 4739183237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6886666885.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2398101 + ... + 2400970.

It is an arithmetic number, because the mean of its divisors is an integer number (604683072).

Almost surely, 2^6886666885 is an apocalyptic number.

It is an amenable number.

6886666885 is a deficient number, since it is larger than the sum of its proper divisors (2788262267).

6886666885 is a wasteful number, since it uses less digits than its factorization.

6886666885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4799124.

The product of its digits is 159252480, while the sum is 67.

The square root of 6886666885 is about 82985.9439001570. The cubic root of 6886666885 is about 1902.5512251635.

Subtracting from 6886666885 its reverse (5886666886), we obtain a palindrome (999999999).

The spelling of 6886666885 in words is "six billion, eight hundred eighty-six million, six hundred sixty-six thousand, eight hundred eighty-five".