11813717 has 2 divisors, whose sum is σ = 11813718. Its totient is φ = 11813716.

The previous prime is 11813713. The next prime is 11813729. The reversal of 11813717 is 71731811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7789681 + 4024036 = 2791^2 + 2006^2 .

It is a cyclic number.

It is not a de Polignac number, because 11813717 - 2² = 11813713 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11813717.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11813713) 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 as a sum of consecutive naturals, namely, 5906858 + 5906859.

It is an arithmetic number, because the mean of its divisors is an integer number (5906859).

Almost surely, 2^11813717 is an apocalyptic number.

It is an amenable number.

11813717 is a deficient number, since it is larger than the sum of its proper divisors (1).

11813717 is an equidigital number, since it uses as much as digits as its factorization.

11813717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1176, while the sum is 29.

The square root of 11813717 is about 3437.1088141053. The cubic root of 11813717 is about 227.7519938470.

The spelling of 11813717 in words is "eleven million, eight hundred thirteen thousand, seven hundred seventeen".