6884666991 has 12 divisors (see below), whose sum is σ = 9987202368. Its totient is φ = 4570077984.

The previous prime is 6884666969. The next prime is 6884667029. The reversal of 6884666991 is 1996664886.

It is not a de Polignac number, because 6884666991 - 2⁷ = 6884666863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6884666911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1639455 + ... + 1643648.

It is an arithmetic number, because the mean of its divisors is an integer number (832266864).

Almost surely, 2^6884666991 is an apocalyptic number.

6884666991 is a deficient number, since it is larger than the sum of its proper divisors (3102535377).

6884666991 is a wasteful number, since it uses less digits than its factorization.

6884666991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3283342 (or 3283339 counting only the distinct ones).

The product of its digits is 26873856, while the sum is 63.

The square root of 6884666991 is about 82973.8934304038. The cubic root of 6884666991 is about 1902.3670398279.

The spelling of 6884666991 in words is "six billion, eight hundred eighty-four million, six hundred sixty-six thousand, nine hundred ninety-one".