11636609 has 2 divisors, whose sum is σ = 11636610. Its totient is φ = 11636608.

The previous prime is 11636587. The next prime is 11636623. The reversal of 11636609 is 90663611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10061584 + 1575025 = 3172^2 + 1255^2 .

It is a cyclic number.

It is not a de Polignac number, because 11636609 - 2⁸ = 11636353 is a prime.

It is not a weakly prime, because it can be changed into another prime (11636659) 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, 5818304 + 5818305.

It is an arithmetic number, because the mean of its divisors is an integer number (5818305).

Almost surely, 2^11636609 is an apocalyptic number.

It is an amenable number.

11636609 is a deficient number, since it is larger than the sum of its proper divisors (1).

11636609 is an equidigital number, since it uses as much as digits as its factorization.

11636609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 11636609 is about 3411.2474257960. The cubic root of 11636609 is about 226.6081267030.

The spelling of 11636609 in words is "eleven million, six hundred thirty-six thousand, six hundred nine".