11113643 has 4 divisors (see below), whose sum is σ = 11201280. Its totient is φ = 11026008.

The previous prime is 11113639. The next prime is 11113657. The reversal of 11113643 is 34631111.

11113643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11113643 - 2² = 11113639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11113603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43628 + ... + 43881.

It is an arithmetic number, because the mean of its divisors is an integer number (2800320).

Almost surely, 2^11113643 is an apocalyptic number.

11113643 is a deficient number, since it is larger than the sum of its proper divisors (87637).

11113643 is an equidigital number, since it uses as much as digits as its factorization.

11113643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87636.

The product of its digits is 216, while the sum is 20.

The square root of 11113643 is about 3333.7130950338. The cubic root of 11113643 is about 223.1612647053.

Adding to 11113643 its reverse (34631111), we get a palindrome (45744754).

The spelling of 11113643 in words is "eleven million, one hundred thirteen thousand, six hundred forty-three".