6728743 has 8 divisors (see below), whose sum is σ = 7805312. Its totient is φ = 5681016.

The previous prime is 6728731. The next prime is 6728749. The reversal of 6728743 is 3478276.

6728743 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6728743 - 2⁹ = 6728231 is a prime.

It is a d-powerful number, because it can be written as 6⁵ + 7³ + 2¹⁵ + 8⁵ + 7⁷ + 4¹⁰ + 3¹⁴ .

It is a Duffinian number.

6728743 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6728749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6705 + ... + 7642.

It is an arithmetic number, because the mean of its divisors is an integer number (975664).

Almost surely, 2^6728743 is an apocalyptic number.

6728743 is a deficient number, since it is larger than the sum of its proper divisors (1076569).

6728743 is a wasteful number, since it uses less digits than its factorization.

6728743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14421.

The product of its digits is 56448, while the sum is 37.

The square root of 6728743 is about 2593.9820739550. The cubic root of 6728743 is about 188.7895626322.

The spelling of 6728743 in words is "six million, seven hundred twenty-eight thousand, seven hundred forty-three".