6728743964 has 12 divisors (see below), whose sum is σ = 11883333000. Its totient is φ = 3333505968.

The previous prime is 6728743963. The next prime is 6728743981. The reversal of 6728743964 is 4693478276.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6728743963) 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 in 3 ways as a sum of consecutive naturals, for example, 7716014 + ... + 7716885.

It is an arithmetic number, because the mean of its divisors is an integer number (990277750).

Almost surely, 2^6728743964 is an apocalyptic number.

It is an amenable number.

6728743964 is a deficient number, since it is larger than the sum of its proper divisors (5154589036).

6728743964 is a wasteful number, since it uses less digits than its factorization.

6728743964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15433012 (or 15433010 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 56.

The square root of 6728743964 is about 82028.9215094286. The cubic root of 6728743964 is about 1887.8957164792.

The spelling of 6728743964 in words is "six billion, seven hundred twenty-eight million, seven hundred forty-three thousand, nine hundred sixty-four".