12643783 has 2 divisors, whose sum is σ = 12643784. Its totient is φ = 12643782.

The previous prime is 12643781. The next prime is 12643793. The reversal of 12643783 is 38734621.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12643783 - 2¹ = 12643781 is a prime.

Together with 12643781, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12643781) 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, 6321891 + 6321892.

It is an arithmetic number, because the mean of its divisors is an integer number (6321892).

Almost surely, 2^12643783 is an apocalyptic number.

12643783 is a deficient number, since it is larger than the sum of its proper divisors (1).

12643783 is an equidigital number, since it uses as much as digits as its factorization.

12643783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 34.

The square root of 12643783 is about 3555.8097530661. The cubic root of 12643783 is about 232.9658935630.

The spelling of 12643783 in words is "twelve million, six hundred forty-three thousand, seven hundred eighty-three".