11536643 has 2 divisors, whose sum is σ = 11536644. Its totient is φ = 11536642.

The previous prime is 11536631. The next prime is 11536649. The reversal of 11536643 is 34663511.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (34663511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11536643 - 2¹⁰ = 11535619 is a prime.

It is not a weakly prime, because it can be changed into another prime (11536649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5768321 + 5768322.

It is an arithmetic number, because the mean of its divisors is an integer number (5768322).

Almost surely, 2^11536643 is an apocalyptic number.

11536643 is a deficient number, since it is larger than the sum of its proper divisors (1).

11536643 is an equidigital number, since it uses as much as digits as its factorization.

11536643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 29.

The square root of 11536643 is about 3396.5634102722. The cubic root of 11536643 is about 225.9573561434.

The spelling of 11536643 in words is "eleven million, five hundred thirty-six thousand, six hundred forty-three".