6878743 has 2 divisors, whose sum is σ = 6878744. Its totient is φ = 6878742.

The previous prime is 6878737. The next prime is 6878749. The reversal of 6878743 is 3478786.

It is a balanced prime because it is at equal distance from previous prime (6878737) and next prime (6878749).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6878743 is a prime.

It is an Ulam number.

6878743 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6878743.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6878749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3439371 + 3439372.

It is an arithmetic number, because the mean of its divisors is an integer number (3439372).

Almost surely, 2^6878743 is an apocalyptic number.

6878743 is a deficient number, since it is larger than the sum of its proper divisors (1).

6878743 is an equidigital number, since it uses as much as digits as its factorization.

6878743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 43.

The square root of 6878743 is about 2622.7357853966. The cubic root of 6878743 is about 190.1821245377.

Adding to 6878743 its sum of digits (43), we get a palindrome (6878786).

The spelling of 6878743 in words is "six million, eight hundred seventy-eight thousand, seven hundred forty-three".