6858870864 has 40 divisors (see below), whose sum is σ = 18761031360. Its totient is φ = 2151802368.

The previous prime is 6858870827. The next prime is 6858870901. The reversal of 6858870864 is 4680788586.

It is an interprime number because it is at equal distance from previous prime (6858870827) and next prime (6858870901).

It is a junction number, because it is equal to n+sod(n) for n = 6858870798 and 6858870807.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4201924 + ... + 4203555.

It is an arithmetic number, because the mean of its divisors is an integer number (469025784).

Almost surely, 2^6858870864 is an apocalyptic number.

It is an amenable number.

6858870864 is an abundant number, since it is smaller than the sum of its proper divisors (11902160496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6858870864 is a wasteful number, since it uses less digits than its factorization.

6858870864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8405507 (or 8405501 counting only the distinct ones).

The product of its (nonzero) digits is 20643840, while the sum is 60.

The square root of 6858870864 is about 82818.3002964924. The cubic root of 6858870864 is about 1899.9880760101.

The spelling of 6858870864 in words is "six billion, eight hundred fifty-eight million, eight hundred seventy thousand, eight hundred sixty-four".