12623519 has 2 divisors, whose sum is σ = 12623520. Its totient is φ = 12623518.

The previous prime is 12623491. The next prime is 12623521. The reversal of 12623519 is 91532621.

It is a strong prime.

It is an emirp because it is prime and its reverse (91532621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12623519 is a prime.

It is a super-2 number, since 2×12623519² = 318706463886722, which contains 22 as substring.

Together with 12623521, 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 = 12623491 and 12623500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12623579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6311759 + 6311760.

It is an arithmetic number, because the mean of its divisors is an integer number (6311760).

Almost surely, 2^12623519 is an apocalyptic number.

12623519 is a deficient number, since it is larger than the sum of its proper divisors (1).

12623519 is an equidigital number, since it uses as much as digits as its factorization.

12623519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 29.

The square root of 12623519 is about 3552.9591891830. The cubic root of 12623519 is about 232.8413700426.

The spelling of 12623519 in words is "twelve million, six hundred twenty-three thousand, five hundred nineteen".