11605109 has 2 divisors, whose sum is σ = 11605110. Its totient is φ = 11605108.

The previous prime is 11605103. The next prime is 11605127. The reversal of 11605109 is 90150611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7102225 + 4502884 = 2665^2 + 2122^2 .

It is a cyclic number.

It is not a de Polignac number, because 11605109 - 2⁴ = 11605093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11605103) 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, 5802554 + 5802555.

It is an arithmetic number, because the mean of its divisors is an integer number (5802555).

Almost surely, 2^11605109 is an apocalyptic number.

It is an amenable number.

11605109 is a deficient number, since it is larger than the sum of its proper divisors (1).

11605109 is an equidigital number, since it uses as much as digits as its factorization.

11605109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270, while the sum is 23.

The square root of 11605109 is about 3406.6272176450. The cubic root of 11605109 is about 226.4034678076.

The spelling of 11605109 in words is "eleven million, six hundred five thousand, one hundred nine".