12746257 has 2 divisors, whose sum is σ = 12746258. Its totient is φ = 12746256.

The previous prime is 12746233. The next prime is 12746263. The reversal of 12746257 is 75264721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12680721 + 65536 = 3561^2 + 256^2 .

It is a cyclic number.

It is not a de Polignac number, because 12746257 - 2¹¹ = 12744209 is a prime.

It is not a weakly prime, because it can be changed into another prime (12746297) 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, 6373128 + 6373129.

It is an arithmetic number, because the mean of its divisors is an integer number (6373129).

Almost surely, 2^12746257 is an apocalyptic number.

It is an amenable number.

12746257 is a deficient number, since it is larger than the sum of its proper divisors (1).

12746257 is an equidigital number, since it uses as much as digits as its factorization.

12746257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23520, while the sum is 34.

The square root of 12746257 is about 3570.1900509637. The cubic root of 12746257 is about 233.5935733615.

The spelling of 12746257 in words is "twelve million, seven hundred forty-six thousand, two hundred fifty-seven".