11660489 has 2 divisors, whose sum is σ = 11660490. Its totient is φ = 11660488.

The previous prime is 11660459. The next prime is 11660491. The reversal of 11660489 is 98406611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11560000 + 100489 = 3400^2 + 317^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11660489 is a prime.

Together with 11660491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11660459) 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, 5830244 + 5830245.

It is an arithmetic number, because the mean of its divisors is an integer number (5830245).

Almost surely, 2^11660489 is an apocalyptic number.

It is an amenable number.

11660489 is a deficient number, since it is larger than the sum of its proper divisors (1).

11660489 is an equidigital number, since it uses as much as digits as its factorization.

11660489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 11660489 is about 3414.7458177733. The cubic root of 11660489 is about 226.7630316419.

The spelling of 11660489 in words is "eleven million, six hundred sixty thousand, four hundred eighty-nine".