6728231 has 2 divisors, whose sum is σ = 6728232. Its totient is φ = 6728230.

The previous prime is 6728221. The next prime is 6728251. The reversal of 6728231 is 1328276.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6728231 - 2¹⁰ = 6727207 is a prime.

It is a super-2 number, since 2×6728231² = 90538184778722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 6728194 and 6728203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6728201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3364115 + 3364116.

It is an arithmetic number, because the mean of its divisors is an integer number (3364116).

Almost surely, 2^6728231 is an apocalyptic number.

6728231 is a deficient number, since it is larger than the sum of its proper divisors (1).

6728231 is an equidigital number, since it uses as much as digits as its factorization.

6728231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 29.

The square root of 6728231 is about 2593.8833821126. The cubic root of 6728231 is about 188.7847740851.

The spelling of 6728231 in words is "six million, seven hundred twenty-eight thousand, two hundred thirty-one".