6828976891 has 16 divisors (see below), whose sum is σ = 8101213920. Its totient is φ = 5685050880.

The previous prime is 6828976849. The next prime is 6828976919. The reversal of 6828976891 is 1986798286.

It is a cyclic number.

It is not a de Polignac number, because 6828976891 - 2⁹ = 6828976379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6828976591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 486576 + ... + 500413.

It is an arithmetic number, because the mean of its divisors is an integer number (506325870).

Almost surely, 2^6828976891 is an apocalyptic number.

6828976891 is a deficient number, since it is larger than the sum of its proper divisors (1272237029).

6828976891 is a wasteful number, since it uses less digits than its factorization.

6828976891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987054.

The product of its digits is 20901888, while the sum is 64.

The square root of 6828976891 is about 82637.6239433347. The cubic root of 6828976891 is about 1897.2237284026.

The spelling of 6828976891 in words is "six billion, eight hundred twenty-eight million, nine hundred seventy-six thousand, eight hundred ninety-one".