6840724 has 24 divisors (see below), whose sum is σ = 13190688. Its totient is φ = 3078240.

The previous prime is 6840721. The next prime is 6840737. The reversal of 6840724 is 4270486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6840721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3982 + ... + 5434.

It is an arithmetic number, because the mean of its divisors is an integer number (549612).

Almost surely, 2^6840724 is an apocalyptic number.

It is an amenable number.

6840724 is a deficient number, since it is larger than the sum of its proper divisors (6349964).

6840724 is a wasteful number, since it uses less digits than its factorization.

6840724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575 (or 1573 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 6840724 is about 2615.4777766213. The cubic root of 6840724 is about 189.8310964323.

The spelling of 6840724 in words is "six million, eight hundred forty thousand, seven hundred twenty-four".