11213605 has 8 divisors (see below), whose sum is σ = 14491512. Its totient is φ = 8280768.

The previous prime is 11213597. The next prime is 11213611. The reversal of 11213605 is 50631211.

11213605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 343396 + 10870209 = 586^2 + 3297^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11213605 - 2³ = 11213597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86194 + ... + 86323.

It is an arithmetic number, because the mean of its divisors is an integer number (1811439).

Almost surely, 2^11213605 is an apocalyptic number.

It is an amenable number.

11213605 is a deficient number, since it is larger than the sum of its proper divisors (3277907).

11213605 is a wasteful number, since it uses less digits than its factorization.

11213605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172535.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 11213605 is about 3348.6721248877. The cubic root of 11213605 is about 223.8283455863.

Adding to 11213605 its reverse (50631211), we get a palindrome (61844816).

The spelling of 11213605 in words is "eleven million, two hundred thirteen thousand, six hundred five".