6728945679 has 12 divisors (see below), whose sum is σ = 9926388576. Its totient is φ = 4390517472.

The previous prime is 6728945647. The next prime is 6728945683. The reversal of 6728945679 is 9765498276.

6728945679 is a `hidden beast` number, since 67 + 2 + 8 + 9 + 4 + 567 + 9 = 666.

6728945679 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6728945679 - 2⁵ = 6728945647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6728945609) 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 11 ways as a sum of consecutive naturals, for example, 7953414 + ... + 7954259.

It is an arithmetic number, because the mean of its divisors is an integer number (827199048).

Almost surely, 2^6728945679 is an apocalyptic number.

6728945679 is a deficient number, since it is larger than the sum of its proper divisors (3197442897).

6728945679 is a wasteful number, since it uses less digits than its factorization.

6728945679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15907726 (or 15907723 counting only the distinct ones).

The product of its digits is 45722880, while the sum is 63.

The square root of 6728945679 is about 82030.1510360672. The cubic root of 6728945679 is about 1887.9145814700.

The spelling of 6728945679 in words is "six billion, seven hundred twenty-eight million, nine hundred forty-five thousand, six hundred seventy-nine".