6728905737 has 16 divisors (see below), whose sum is σ = 10402174080. Its totient is φ = 4290896016.

The previous prime is 6728905721. The next prime is 6728905739. The reversal of 6728905737 is 7375098276.

6728905737 is a `hidden beast` number, since 67 + 2 + 8 + 9 + 0 + 573 + 7 = 666.

It is not a de Polignac number, because 6728905737 - 2⁴ = 6728905721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6728905739) 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 15 ways as a sum of consecutive naturals, for example, 5417178 + ... + 5418419.

It is an arithmetic number, because the mean of its divisors is an integer number (650135880).

Almost surely, 2^6728905737 is an apocalyptic number.

It is an amenable number.

6728905737 is a deficient number, since it is larger than the sum of its proper divisors (3673268343).

6728905737 is a wasteful number, since it uses less digits than its factorization.

6728905737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10835629 (or 10835623 counting only the distinct ones).

The product of its (nonzero) digits is 4445280, while the sum is 54.

The square root of 6728905737 is about 82029.9075764443. The cubic root of 6728905737 is about 1887.9108460045.

The spelling of 6728905737 in words is "six billion, seven hundred twenty-eight million, nine hundred five thousand, seven hundred thirty-seven".