11568813 has 8 divisors (see below), whose sum is σ = 15452928. Its totient is φ = 7698624.

The previous prime is 11568803. The next prime is 11568829. The reversal of 11568813 is 31886511.

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

It is not a de Polignac number, because 11568813 - 2⁶ = 11568749 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11568803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1356 + ... + 4997.

It is an arithmetic number, because the mean of its divisors is an integer number (1931616).

Almost surely, 2^11568813 is an apocalyptic number.

It is an amenable number.

11568813 is a deficient number, since it is larger than the sum of its proper divisors (3884115).

11568813 is an equidigital number, since it uses as much as digits as its factorization.

11568813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6963.

The product of its digits is 5760, while the sum is 33.

The square root of 11568813 is about 3401.2957824923. The cubic root of 11568813 is about 226.1671890500.

The spelling of 11568813 in words is "eleven million, five hundred sixty-eight thousand, eight hundred thirteen".