12784523 has 2 divisors, whose sum is σ = 12784524. Its totient is φ = 12784522.

The previous prime is 12784489. The next prime is 12784547. The reversal of 12784523 is 32548721.

12784523 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12784523 - 2¹⁰ = 12783499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12784523.

It is not a weakly prime, because it can be changed into another prime (12784823) 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, 6392261 + 6392262.

It is an arithmetic number, because the mean of its divisors is an integer number (6392262).

Almost surely, 2^12784523 is an apocalyptic number.

12784523 is a deficient number, since it is larger than the sum of its proper divisors (1).

12784523 is an equidigital number, since it uses as much as digits as its factorization.

12784523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 32.

The square root of 12784523 is about 3575.5451332629. The cubic root of 12784523 is about 233.8270997348.

The spelling of 12784523 in words is "twelve million, seven hundred eighty-four thousand, five hundred twenty-three".