6845391 has 20 divisors (see below), whose sum is σ = 11687632. Its totient is φ = 3911328.

The previous prime is 6845383. The next prime is 6845413. The reversal of 6845391 is 1935486.

It is not a de Polignac number, because 6845391 - 2³ = 6845383 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 (6845341) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5470 + ... + 6603.

Almost surely, 2^6845391 is an apocalyptic number.

6845391 is a deficient number, since it is larger than the sum of its proper divisors (4842241).

6845391 is a wasteful number, since it uses less digits than its factorization.

6845391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12092 (or 12083 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 6845391 is about 2616.3698133100. The cubic root of 6845391 is about 189.8742565973.

The spelling of 6845391 in words is "six million, eight hundred forty-five thousand, three hundred ninety-one".