6728447503 has 4 divisors (see below), whose sum is σ = 6732386280. Its totient is φ = 6724508728.

The previous prime is 6728447477. The next prime is 6728447507. The reversal of 6728447503 is 3057448276.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6728447503 - 2⁵ = 6728447471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6728447507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1966825 + ... + 1970242.

It is an arithmetic number, because the mean of its divisors is an integer number (1683096570).

Almost surely, 2^6728447503 is an apocalyptic number.

6728447503 is a deficient number, since it is larger than the sum of its proper divisors (3938777).

6728447503 is a wasteful number, since it uses less digits than its factorization.

6728447503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3938776.

The product of its (nonzero) digits is 1128960, while the sum is 46.

The square root of 6728447503 is about 82027.1144378491. The cubic root of 6728447503 is about 1887.8679898745.

The spelling of 6728447503 in words is "six billion, seven hundred twenty-eight million, four hundred forty-seven thousand, five hundred three".