6728297 has 4 divisors (see below), whose sum is σ = 6855300. Its totient is φ = 6601296.

The previous prime is 6728279. The next prime is 6728321. The reversal of 6728297 is 7928276.

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 2611456 + 4116841 = 1616^2 + 2029^2 .

It is a cyclic number.

It is not a de Polignac number, because 6728297 - 2⁸ = 6728041 is a prime.

It is a d-powerful number, because it can be written as 6⁵ + 7⁷ + 2⁹ + 8³ + 2¹⁷ + 9² + 7⁸ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6728257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63422 + ... + 63527.

It is an arithmetic number, because the mean of its divisors is an integer number (1713825).

Almost surely, 2^6728297 is an apocalyptic number.

It is an amenable number.

6728297 is a deficient number, since it is larger than the sum of its proper divisors (127003).

6728297 is a wasteful number, since it uses less digits than its factorization.

6728297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127002.

The product of its digits is 84672, while the sum is 41.

The square root of 6728297 is about 2593.8961043188. The cubic root of 6728297 is about 188.7853913724.

The spelling of 6728297 in words is "six million, seven hundred twenty-eight thousand, two hundred ninety-seven".