12604217 has 2 divisors, whose sum is σ = 12604218. Its totient is φ = 12604216.

The previous prime is 12604211. The next prime is 12604219. The reversal of 12604217 is 71240621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12538681 + 65536 = 3541^2 + 256^2 .

It is a cyclic number.

It is not a de Polignac number, because 12604217 - 2¹⁰ = 12603193 is a prime.

Together with 12604219, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12604192 and 12604201.

It is not a weakly prime, because it can be changed into another prime (12604211) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6302108 + 6302109.

It is an arithmetic number, because the mean of its divisors is an integer number (6302109).

Almost surely, 2^12604217 is an apocalyptic number.

It is an amenable number.

12604217 is a deficient number, since it is larger than the sum of its proper divisors (1).

12604217 is an equidigital number, since it uses as much as digits as its factorization.

12604217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 12604217 is about 3550.2418227495. The cubic root of 12604217 is about 232.7226340878.

Adding to 12604217 its reverse (71240621), we get a palindrome (83844838).

It can be divided in two parts, 12604 and 217, that added together give a palindrome (12821).

The spelling of 12604217 in words is "twelve million, six hundred four thousand, two hundred seventeen".