2684257 has 2 divisors, whose sum is σ = 2684258. Its totient is φ = 2684256.

The previous prime is 2684237. The next prime is 2684273. The reversal of 2684257 is 7524862.

2684257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1347921 + 1336336 = 1161^2 + 1156^2 .

It is a cyclic number.

It is not a de Polignac number, because 2684257 - 2¹⁵ = 2651489 is a prime.

It is not a weakly prime, because it can be changed into another prime (2684207) 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 as a sum of consecutive naturals, namely, 1342128 + 1342129.

It is an arithmetic number, because the mean of its divisors is an integer number (1342129).

2^2684257 is an apocalyptic number.

It is an amenable number.

2684257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2684257 is an equidigital number, since it uses as much as digits as its factorization.

2684257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 34.

The square root of 2684257 is about 1638.3702267803. The cubic root of 2684257 is about 138.9764982781.

The spelling of 2684257 in words is "two million, six hundred eighty-four thousand, two hundred fifty-seven".