12783679 has 2 divisors, whose sum is σ = 12783680. Its totient is φ = 12783678.

The previous prime is 12783649. The next prime is 12783697. The reversal of 12783679 is 97638721.

It is a happy number.

12783679 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (12783697) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12783679 - 2⁵ = 12783647 is a prime.

It is a plaindrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12783649) 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, 6391839 + 6391840.

It is an arithmetic number, because the mean of its divisors is an integer number (6391840).

Almost surely, 2^12783679 is an apocalyptic number.

12783679 is a deficient number, since it is larger than the sum of its proper divisors (1).

12783679 is an equidigital number, since it uses as much as digits as its factorization.

12783679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 43.

The square root of 12783679 is about 3575.4271073537. The cubic root of 12783679 is about 233.8219540750.

The spelling of 12783679 in words is "twelve million, seven hundred eighty-three thousand, six hundred seventy-nine".