12605897 has 2 divisors, whose sum is σ = 12605898. Its totient is φ = 12605896.

The previous prime is 12605867. The next prime is 12605899. The reversal of 12605897 is 79850621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10137856 + 2468041 = 3184^2 + 1571^2 .

It is a cyclic number.

It is not a de Polignac number, because 12605897 - 2¹⁰ = 12604873 is a prime.

Together with 12605899, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12605897.

It is not a weakly prime, because it can be changed into another prime (12605899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6302948 + 6302949.

It is an arithmetic number, because the mean of its divisors is an integer number (6302949).

Almost surely, 2^12605897 is an apocalyptic number.

It is an amenable number.

12605897 is a deficient number, since it is larger than the sum of its proper divisors (1).

12605897 is an equidigital number, since it uses as much as digits as its factorization.

12605897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 12605897 is about 3550.4784184670. The cubic root of 12605897 is about 232.7329733961.

The spelling of 12605897 in words is "twelve million, six hundred five thousand, eight hundred ninety-seven".