6728741 has 4 divisors (see below), whose sum is σ = 6823584. Its totient is φ = 6633900.

The previous prime is 6728731. The next prime is 6728749. The reversal of 6728741 is 1478276.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6728741 - 2¹⁰ = 6727717 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 (6728749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47315 + ... + 47456.

It is an arithmetic number, because the mean of its divisors is an integer number (1705896).

Almost surely, 2^6728741 is an apocalyptic number.

It is an amenable number.

6728741 is a deficient number, since it is larger than the sum of its proper divisors (94843).

6728741 is an equidigital number, since it uses as much as digits as its factorization.

6728741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94842.

The product of its digits is 18816, while the sum is 35.

The square root of 6728741 is about 2593.9816884473. The cubic root of 6728741 is about 188.7895439274.

The spelling of 6728741 in words is "six million, seven hundred twenty-eight thousand, seven hundred forty-one".