6888257 has 2 divisors, whose sum is σ = 6888258. Its totient is φ = 6888256.

The previous prime is 6888229. The next prime is 6888263. The reversal of 6888257 is 7528886.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5340721 + 1547536 = 2311^2 + 1244^2 .

It is a cyclic number.

It is not a de Polignac number, because 6888257 - 2¹⁶ = 6822721 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6888157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3444128 + 3444129.

It is an arithmetic number, because the mean of its divisors is an integer number (3444129).

Almost surely, 2^6888257 is an apocalyptic number.

It is an amenable number.

6888257 is a deficient number, since it is larger than the sum of its proper divisors (1).

6888257 is an equidigital number, since it uses as much as digits as its factorization.

6888257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 215040, while the sum is 44.

The square root of 6888257 is about 2624.5489136231. The cubic root of 6888257 is about 190.2697645412.

The spelling of 6888257 in words is "six million, eight hundred eighty-eight thousand, two hundred fifty-seven".