6691000868 has 12 divisors (see below), whose sum is σ = 11710760880. Its totient is φ = 3345069192.

The previous prime is 6691000867. The next prime is 6691000873. The reversal of 6691000868 is 8680001966.

It is not an unprimeable number, because it can be changed into a prime (6691000867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71546 + ... + 136017.

It is an arithmetic number, because the mean of its divisors is an integer number (975896740).

Almost surely, 2^6691000868 is an apocalyptic number.

It is an amenable number.

6691000868 is a deficient number, since it is larger than the sum of its proper divisors (5019760012).

6691000868 is a wasteful number, since it uses less digits than its factorization.

6691000868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215626 (or 215624 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 6691000868 is about 81798.5382998987. The cubic root of 6691000868 is about 1884.3592132290.

The spelling of 6691000868 in words is "six billion, six hundred ninety-one million, eight hundred sixty-eight", and thus it is an aban number.