6828557 has 2 divisors, whose sum is σ = 6828558. Its totient is φ = 6828556.

The previous prime is 6828527. The next prime is 6828599. The reversal of 6828557 is 7558286.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6817321 + 11236 = 2611^2 + 106^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6828557 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6828517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3414278 + 3414279.

It is an arithmetic number, because the mean of its divisors is an integer number (3414279).

Almost surely, 2^6828557 is an apocalyptic number.

It is an amenable number.

6828557 is a deficient number, since it is larger than the sum of its proper divisors (1).

6828557 is an equidigital number, since it uses as much as digits as its factorization.

6828557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 134400, while the sum is 41.

The square root of 6828557 is about 2613.1507801885. The cubic root of 6828557 is about 189.7184842954.

The spelling of 6828557 in words is "six million, eight hundred twenty-eight thousand, five hundred fifty-seven".