11578813 has 2 divisors, whose sum is σ = 11578814. Its totient is φ = 11578812.

The previous prime is 11578799. The next prime is 11578823. The reversal of 11578813 is 31887511.

11578813 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11539609 + 39204 = 3397^2 + 198^2 .

It is a cyclic number.

It is not a de Polignac number, because 11578813 - 2⁵ = 11578781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11578823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5789406 + 5789407.

It is an arithmetic number, because the mean of its divisors is an integer number (5789407).

Almost surely, 2^11578813 is an apocalyptic number.

It is an amenable number.

11578813 is a deficient number, since it is larger than the sum of its proper divisors (1).

11578813 is an equidigital number, since it uses as much as digits as its factorization.

11578813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 34.

The square root of 11578813 is about 3402.7654929483. The cubic root of 11578813 is about 226.2323360547.

The spelling of 11578813 in words is "eleven million, five hundred seventy-eight thousand, eight hundred thirteen".