6843440 has 40 divisors (see below), whose sum is σ = 16057008. Its totient is φ = 2712320.

The previous prime is 6843437. The next prime is 6843451. The reversal of 6843440 is 443486.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10154 + ... + 10806.

Almost surely, 2^6843440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6843440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8028504).

6843440 is an abundant number, since it is smaller than the sum of its proper divisors (9213568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6843440 is a wasteful number, since it uses less digits than its factorization.

6843440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797 (or 791 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 6843440 is about 2615.9969418942. The cubic root of 6843440 is about 189.8562162412.

The spelling of 6843440 in words is "six million, eight hundred forty-three thousand, four hundred forty".