8679822821 has 6 divisors (see below), whose sum is σ = 9220434930. Its totient is φ = 8169244736.

The previous prime is 8679822793. The next prime is 8679822841. The reversal of 8679822821 is 1282289768.

8679822821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 3101376100 + 5578446721 = 55690^2 + 74689^2 .

It is not a de Polignac number, because 8679822821 - 2¹⁰ = 8679821797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8679822841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15016706 + ... + 15017283.

It is an arithmetic number, because the mean of its divisors is an integer number (1536739155).

Almost surely, 2^8679822821 is an apocalyptic number.

It is an amenable number.

8679822821 is a deficient number, since it is larger than the sum of its proper divisors (540612109).

8679822821 is a wasteful number, since it uses less digits than its factorization.

8679822821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30034023 (or 30034006 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 53.

The square root of 8679822821 is about 93165.5667132444. The cubic root of 8679822821 is about 2055.1189004597.

The spelling of 8679822821 in words is "eight billion, six hundred seventy-nine million, eight hundred twenty-two thousand, eight hundred twenty-one".