11766589 has 2 divisors, whose sum is σ = 11766590. Its totient is φ = 11766588.

The previous prime is 11766569. The next prime is 11766611. The reversal of 11766589 is 98566711.

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., 8732025 + 3034564 = 2955^2 + 1742^2 .

It is a cyclic number.

It is not a de Polignac number, because 11766589 - 2¹⁷ = 11635517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11766539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5883294 + 5883295.

It is an arithmetic number, because the mean of its divisors is an integer number (5883295).

Almost surely, 2^11766589 is an apocalyptic number.

It is an amenable number.

11766589 is a deficient number, since it is larger than the sum of its proper divisors (1).

11766589 is an equidigital number, since it uses as much as digits as its factorization.

11766589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 43.

The square root of 11766589 is about 3430.2462010765. The cubic root of 11766589 is about 227.4487361851.

The spelling of 11766589 in words is "eleven million, seven hundred sixty-six thousand, five hundred eighty-nine".