11726609 has 2 divisors, whose sum is σ = 11726610. Its totient is φ = 11726608.

The previous prime is 11726599. The next prime is 11726683. The reversal of 11726609 is 90662711.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8248384 + 3478225 = 2872^2 + 1865^2 .

It is a cyclic number.

It is not a de Polignac number, because 11726609 - 2¹⁶ = 11661073 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11726909) 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, 5863304 + 5863305.

It is an arithmetic number, because the mean of its divisors is an integer number (5863305).

Almost surely, 2^11726609 is an apocalyptic number.

It is an amenable number.

11726609 is a deficient number, since it is larger than the sum of its proper divisors (1).

11726609 is an equidigital number, since it uses as much as digits as its factorization.

11726609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 11726609 is about 3424.4136724409. The cubic root of 11726609 is about 227.1908387602.

The spelling of 11726609 in words is "eleven million, seven hundred twenty-six thousand, six hundred nine".