6875391 has 4 divisors (see below), whose sum is σ = 9167192. Its totient is φ = 4583592.

The previous prime is 6875389. The next prime is 6875419. The reversal of 6875391 is 1935786.

6875391 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 6875391 - 2¹ = 6875389 is a prime.

It is a D-number.

It is a Duffinian number.

6875391 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6875311) 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, 1145896 + ... + 1145901.

It is an arithmetic number, because the mean of its divisors is an integer number (2291798).

Almost surely, 2^6875391 is an apocalyptic number.

6875391 is a deficient number, since it is larger than the sum of its proper divisors (2291801).

6875391 is a wasteful number, since it uses less digits than its factorization.

6875391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2291800.

The product of its digits is 45360, while the sum is 39.

The square root of 6875391 is about 2622.0966801398. The cubic root of 6875391 is about 190.1512277077.

The spelling of 6875391 in words is "six million, eight hundred seventy-five thousand, three hundred ninety-one".