6728543 has 2 divisors, whose sum is σ = 6728544. Its totient is φ = 6728542.

The previous prime is 6728539. The next prime is 6728563. The reversal of 6728543 is 3458276.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6728543 - 2² = 6728539 is a prime.

It is a d-powerful number, because it can be written as 6⁸ + 7² + 2⁷ + 8³ + 5⁵ + 4⁹ + 3¹⁴ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6728503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3364271 + 3364272.

It is an arithmetic number, because the mean of its divisors is an integer number (3364272).

Almost surely, 2^6728543 is an apocalyptic number.

6728543 is a deficient number, since it is larger than the sum of its proper divisors (1).

6728543 is an equidigital number, since it uses as much as digits as its factorization.

6728543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 35.

The square root of 6728543 is about 2593.9435229010. The cubic root of 6728543 is about 188.7876921349.

The spelling of 6728543 in words is "six million, seven hundred twenty-eight thousand, five hundred forty-three".