11688913 has 2 divisors, whose sum is σ = 11688914. Its totient is φ = 11688912.

The previous prime is 11688907. The next prime is 11688917. The reversal of 11688913 is 31988611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10810944 + 877969 = 3288^2 + 937^2 .

It is a cyclic number.

It is not a de Polignac number, because 11688913 - 2²¹ = 9591761 is a prime.

It is not a weakly prime, because it can be changed into another prime (11688917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5844456 + 5844457.

It is an arithmetic number, because the mean of its divisors is an integer number (5844457).

Almost surely, 2^11688913 is an apocalyptic number.

It is an amenable number.

11688913 is a deficient number, since it is larger than the sum of its proper divisors (1).

11688913 is an equidigital number, since it uses as much as digits as its factorization.

11688913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 37.

The square root of 11688913 is about 3418.9052341356. The cubic root of 11688913 is about 226.9471371921.

The spelling of 11688913 in words is "eleven million, six hundred eighty-eight thousand, nine hundred thirteen".