6728465 has 4 divisors (see below), whose sum is σ = 8074164. Its totient is φ = 5382768.

The previous prime is 6728441. The next prime is 6728467. The reversal of 6728465 is 5648276.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1456849 + 5271616 = 1207^2 + 2296^2 .

It is a cyclic number.

It is not a de Polignac number, because 6728465 - 2⁶ = 6728401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6728467) 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, 672842 + ... + 672851.

It is an arithmetic number, because the mean of its divisors is an integer number (2018541).

Almost surely, 2^6728465 is an apocalyptic number.

It is an amenable number.

6728465 is a deficient number, since it is larger than the sum of its proper divisors (1345699).

6728465 is a wasteful number, since it uses less digits than its factorization.

6728465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345698.

The product of its digits is 80640, while the sum is 38.

The square root of 6728465 is about 2593.9284878346. The cubic root of 6728465 is about 188.7869626309.

The spelling of 6728465 in words is "six million, seven hundred twenty-eight thousand, four hundred sixty-five".