11105643 has 4 divisors (see below), whose sum is σ = 14807528. Its totient is φ = 7403760.

The previous prime is 11105609. The next prime is 11105651. The reversal of 11105643 is 34650111.

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

It is not a de Polignac number, because 11105643 - 2⁸ = 11105387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11105603) 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, 1850938 + ... + 1850943.

It is an arithmetic number, because the mean of its divisors is an integer number (3701882).

Almost surely, 2^11105643 is an apocalyptic number.

11105643 is a deficient number, since it is larger than the sum of its proper divisors (3701885).

11105643 is an equidigital number, since it uses as much as digits as its factorization.

11105643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3701884.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 11105643 is about 3332.5130157285. The cubic root of 11105643 is about 223.1077053500.

Adding to 11105643 its reverse (34650111), we get a palindrome (45755754).

The spelling of 11105643 in words is "eleven million, one hundred five thousand, six hundred forty-three".