6851393 has 4 divisors (see below), whose sum is σ = 6889428. Its totient is φ = 6813360.

The previous prime is 6851347. The next prime is 6851407. The reversal of 6851393 is 3931586.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49729 + 6801664 = 223^2 + 2608^2 .

It is a cyclic number.

It is not a de Polignac number, because 6851393 - 2¹⁰ = 6850369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6851333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18746 + ... + 19107.

It is an arithmetic number, because the mean of its divisors is an integer number (1722357).

Almost surely, 2^6851393 is an apocalyptic number.

It is an amenable number.

6851393 is a deficient number, since it is larger than the sum of its proper divisors (38035).

6851393 is a wasteful number, since it uses less digits than its factorization.

6851393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38034.

The product of its digits is 19440, while the sum is 35.

The square root of 6851393 is about 2617.5165711032. The cubic root of 6851393 is about 189.9297339434.

The spelling of 6851393 in words is "six million, eight hundred fifty-one thousand, three hundred ninety-three".