8067868857 has 12 divisors (see below), whose sum is σ = 12339093780. Its totient is φ = 5062192128.

The previous prime is 8067868843. The next prime is 8067868859. The reversal of 8067868857 is 7588687608.

It can be written as a sum of positive squares in 2 ways, for example, as 5777672121 + 2290196736 = 76011^2 + 47856^2 .

It is not a de Polignac number, because 8067868857 - 2⁶ = 8067868793 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8067868794 and 8067868803.

It is not an unprimeable number, because it can be changed into a prime (8067868859) 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 11 ways as a sum of consecutive naturals, for example, 26365432 + ... + 26365737.

It is an arithmetic number, because the mean of its divisors is an integer number (1028257815).

Almost surely, 2^8067868857 is an apocalyptic number.

It is an amenable number.

8067868857 is a deficient number, since it is larger than the sum of its proper divisors (4271224923).

8067868857 is a wasteful number, since it uses less digits than its factorization.

8067868857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52731192 (or 52731189 counting only the distinct ones).

The product of its (nonzero) digits is 36126720, while the sum is 63.

The square root of 8067868857 is about 89821.3162729204. The cubic root of 8067868857 is about 2005.6398193531.

The spelling of 8067868857 in words is "eight billion, sixty-seven million, eight hundred sixty-eight thousand, eight hundred fifty-seven".