6813311646 has 64 divisors (see below), whose sum is σ = 14840884800. Its totient is φ = 2076549120.

The previous prime is 6813311639. The next prime is 6813311677. The reversal of 6813311646 is 6461133186.

6813311646 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 3958066 + ... + 3959786.

It is an arithmetic number, because the mean of its divisors is an integer number (231888825).

Almost surely, 2^6813311646 is an apocalyptic number.

6813311646 is an abundant number, since it is smaller than the sum of its proper divisors (8027573154).

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

6813311646 is a wasteful number, since it uses less digits than its factorization.

6813311646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2829.

The product of its digits is 62208, while the sum is 39.

The square root of 6813311646 is about 82542.7867593529. The cubic root of 6813311646 is about 1895.7719136021.

The spelling of 6813311646 in words is "six billion, eight hundred thirteen million, three hundred eleven thousand, six hundred forty-six".