12816247 has 2 divisors, whose sum is σ = 12816248. Its totient is φ = 12816246.

The previous prime is 12816211. The next prime is 12816257. The reversal of 12816247 is 74261821.

It is a strong prime.

It is an emirp because it is prime and its reverse (74261821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12816247 - 2¹¹ = 12814199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12816257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6408123 + 6408124.

It is an arithmetic number, because the mean of its divisors is an integer number (6408124).

Almost surely, 2^12816247 is an apocalyptic number.

12816247 is a deficient number, since it is larger than the sum of its proper divisors (1).

12816247 is an equidigital number, since it uses as much as digits as its factorization.

12816247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 31.

The square root of 12816247 is about 3579.9786312211. The cubic root of 12816247 is about 234.0203491204.

The spelling of 12816247 in words is "twelve million, eight hundred sixteen thousand, two hundred forty-seven".