12617219 has 2 divisors, whose sum is σ = 12617220. Its totient is φ = 12617218.

The previous prime is 12617203. The next prime is 12617221. The reversal of 12617219 is 91271621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12617219 - 2⁴ = 12617203 is a prime.

It is a super-2 number, since 2×12617219² = 318388430587922, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 12617221, 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 = 12617191 and 12617200.

It is not a weakly prime, because it can be changed into another prime (12617719) 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, 6308609 + 6308610.

It is an arithmetic number, because the mean of its divisors is an integer number (6308610).

Almost surely, 2^12617219 is an apocalyptic number.

12617219 is a deficient number, since it is larger than the sum of its proper divisors (1).

12617219 is an equidigital number, since it uses as much as digits as its factorization.

12617219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 29.

The square root of 12617219 is about 3552.0724936296. The cubic root of 12617219 is about 232.8026290036.

The spelling of 12617219 in words is "twelve million, six hundred seventeen thousand, two hundred nineteen".