6847857 has 12 divisors (see below), whose sum is σ = 10232820. Its totient is φ = 4407648.

The previous prime is 6847843. The next prime is 6847871. The reversal of 6847857 is 7587486.

It is an interprime number because it is at equal distance from previous prime (6847843) and next prime (6847871).

It can be written as a sum of positive squares in 2 ways, for example, as 2143296 + 4704561 = 1464^2 + 2169^2 .

It is not a de Polignac number, because 6847857 - 2¹¹ = 6845809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6847817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12858 + ... + 13379.

It is an arithmetic number, because the mean of its divisors is an integer number (852735).

Almost surely, 2^6847857 is an apocalyptic number.

It is an amenable number.

6847857 is a deficient number, since it is larger than the sum of its proper divisors (3384963).

6847857 is a wasteful number, since it uses less digits than its factorization.

6847857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26272 (or 26269 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The square root of 6847857 is about 2616.8410345300. The cubic root of 6847857 is about 189.8970541118.

The spelling of 6847857 in words is "six million, eight hundred forty-seven thousand, eight hundred fifty-seven".