6840743 has 12 divisors (see below), whose sum is σ = 8570520. Its totient is φ = 5411952.

The previous prime is 6840737. The next prime is 6840761. The reversal of 6840743 is 3470486.

It is a happy number.

It is not a de Polignac number, because 6840743 - 2¹⁰ = 6839719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6840793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4733 + ... + 6006.

It is an arithmetic number, because the mean of its divisors is an integer number (714210).

Almost surely, 2^6840743 is an apocalyptic number.

6840743 is a deficient number, since it is larger than the sum of its proper divisors (1729777).

6840743 is a wasteful number, since it uses less digits than its factorization.

6840743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10766 (or 10759 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 6840743 is about 2615.4814088424. The cubic root of 6840743 is about 189.8312721831.

The spelling of 6840743 in words is "six million, eight hundred forty thousand, seven hundred forty-three".