11366813 has 4 divisors (see below), whose sum is σ = 11494620. Its totient is φ = 11239008.

The previous prime is 11366791. The next prime is 11366821. The reversal of 11366813 is 31866311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31866311 = 43 ⋅741077.

It can be written as a sum of positive squares in 2 ways, for example, as 6692569 + 4674244 = 2587^2 + 2162^2 .

It is a cyclic number.

It is not a de Polignac number, because 11366813 - 2¹⁰ = 11365789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11366833) 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, 63770 + ... + 63947.

It is an arithmetic number, because the mean of its divisors is an integer number (2873655).

Almost surely, 2^11366813 is an apocalyptic number.

It is an amenable number.

11366813 is a deficient number, since it is larger than the sum of its proper divisors (127807).

11366813 is an equidigital number, since it uses as much as digits as its factorization.

11366813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127806.

The product of its digits is 2592, while the sum is 29.

The square root of 11366813 is about 3371.4704507084. The cubic root of 11366813 is about 224.8431037878.

The spelling of 11366813 in words is "eleven million, three hundred sixty-six thousand, eight hundred thirteen".