6486257 has 2 divisors, whose sum is σ = 6486258. Its totient is φ = 6486256.

The previous prime is 6486251. The next prime is 6486281. The reversal of 6486257 is 7526846.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4946176 + 1540081 = 2224^2 + 1241^2 .

It is a cyclic number.

It is not a de Polignac number, because 6486257 - 2⁸ = 6486001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6486257.

It is not a weakly prime, because it can be changed into another prime (6486251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3243128 + 3243129.

It is an arithmetic number, because the mean of its divisors is an integer number (3243129).

Almost surely, 2^6486257 is an apocalyptic number.

It is an amenable number.

6486257 is a deficient number, since it is larger than the sum of its proper divisors (1).

6486257 is an equidigital number, since it uses as much as digits as its factorization.

6486257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 38.

The square root of 6486257 is about 2546.8131066099. The cubic root of 6486257 is about 186.4939370841.

The spelling of 6486257 in words is "six million, four hundred eighty-six thousand, two hundred fifty-seven".