12608257 has 2 divisors, whose sum is σ = 12608258. Its totient is φ = 12608256.

The previous prime is 12608249. The next prime is 12608263. The reversal of 12608257 is 75280621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6843456 + 5764801 = 2616^2 + 2401^2 .

It is a cyclic number.

It is not a de Polignac number, because 12608257 - 2³ = 12608249 is a prime.

It is not a weakly prime, because it can be changed into another prime (12608287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6304128 + 6304129.

It is an arithmetic number, because the mean of its divisors is an integer number (6304129).

Almost surely, 2^12608257 is an apocalyptic number.

It is an amenable number.

12608257 is a deficient number, since it is larger than the sum of its proper divisors (1).

12608257 is an equidigital number, since it uses as much as digits as its factorization.

12608257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 12608257 is about 3550.8107524902. The cubic root of 12608257 is about 232.7474961110.

Adding to 12608257 its reverse (75280621), we get a palindrome (87888878).

The spelling of 12608257 in words is "twelve million, six hundred eight thousand, two hundred fifty-seven".