6856086357 has 6 divisors (see below), whose sum is σ = 9903235862. Its totient is φ = 4570724232.

The previous prime is 6856086329. The next prime is 6856086389. The reversal of 6856086357 is 7536806586.

6856086357 is digitally balanced in base 3, 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 only one way, i.e., 4979983761 + 1876102596 = 70569^2 + 43314^2 .

It is not a de Polignac number, because 6856086357 - 2⁷ = 6856086229 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 (6856086317) 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, 380893678 + ... + 380893695.

Almost surely, 2^6856086357 is an apocalyptic number.

It is an amenable number.

6856086357 is a deficient number, since it is larger than the sum of its proper divisors (3047149505).

6856086357 is a wasteful number, since it uses less digits than its factorization.

6856086357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761787379 (or 761787376 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 54.

The square root of 6856086357 is about 82801.4876496793. The cubic root of 6856086357 is about 1899.7309274552.

The spelling of 6856086357 in words is "six billion, eight hundred fifty-six million, eighty-six thousand, three hundred fifty-seven".