6813400723 has 2 divisors, whose sum is σ = 6813400724. Its totient is φ = 6813400722.

The previous prime is 6813400721. The next prime is 6813400739. The reversal of 6813400723 is 3270043186.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6813400723 - 2¹ = 6813400721 is a prime.

Together with 6813400721, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6813400721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3406700361 + 3406700362.

It is an arithmetic number, because the mean of its divisors is an integer number (3406700362).

Almost surely, 2^6813400723 is an apocalyptic number.

6813400723 is a deficient number, since it is larger than the sum of its proper divisors (1).

6813400723 is an equidigital number, since it uses as much as digits as its factorization.

6813400723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 6813400723 is about 82543.3263383540. The cubic root of 6813400723 is about 1895.7801753182.

The spelling of 6813400723 in words is "six billion, eight hundred thirteen million, four hundred thousand, seven hundred twenty-three".