6866844886 has 16 divisors (see below), whose sum is σ = 11286164160. Its totient is φ = 3107540680.

The previous prime is 6866844877. The next prime is 6866844889. The reversal of 6866844886 is 6884486686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6866844889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 682516 + ... + 692503.

It is an arithmetic number, because the mean of its divisors is an integer number (705385260).

Almost surely, 2^6866844886 is an apocalyptic number.

6866844886 is a deficient number, since it is larger than the sum of its proper divisors (4419319274).

6866844886 is a wasteful number, since it uses less digits than its factorization.

6866844886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375259.

The product of its digits is 84934656, while the sum is 64.

The square root of 6866844886 is about 82866.4279790073. The cubic root of 6866844886 is about 1900.7240902191.

The spelling of 6866844886 in words is "six billion, eight hundred sixty-six million, eight hundred forty-four thousand, eight hundred eighty-six".