12784361 has 2 divisors, whose sum is σ = 12784362. Its totient is φ = 12784360.

The previous prime is 12784339. The next prime is 12784363. The reversal of 12784361 is 16348721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12250000 + 534361 = 3500^2 + 731^2 .

It is a cyclic number.

It is not a de Polignac number, because 12784361 - 2¹⁴ = 12767977 is a prime.

Together with 12784363, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12784363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6392180 + 6392181.

It is an arithmetic number, because the mean of its divisors is an integer number (6392181).

Almost surely, 2^12784361 is an apocalyptic number.

It is an amenable number.

12784361 is a deficient number, since it is larger than the sum of its proper divisors (1).

12784361 is an equidigital number, since it uses as much as digits as its factorization.

12784361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 32.

The square root of 12784361 is about 3575.5224793029. The cubic root of 12784361 is about 233.8261120783.

The spelling of 12784361 in words is "twelve million, seven hundred eighty-four thousand, three hundred sixty-one".