11123647 has 2 divisors, whose sum is σ = 11123648. Its totient is φ = 11123646.

The previous prime is 11123639. The next prime is 11123657. The reversal of 11123647 is 74632111.

It is a weak prime.

It is an emirp because it is prime and its reverse (74632111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11123647 - 2³ = 11123639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11123657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561823 + 5561824.

It is an arithmetic number, because the mean of its divisors is an integer number (5561824).

Almost surely, 2^11123647 is an apocalyptic number.

11123647 is a deficient number, since it is larger than the sum of its proper divisors (1).

11123647 is an equidigital number, since it uses as much as digits as its factorization.

11123647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 25.

The square root of 11123647 is about 3335.2131865894. The cubic root of 11123647 is about 223.2282045245.

Adding to 11123647 its reverse (74632111), we get a palindrome (85755758).

The spelling of 11123647 in words is "eleven million, one hundred twenty-three thousand, six hundred forty-seven".