8366609 has 2 divisors, whose sum is σ = 8366610. Its totient is φ = 8366608.

The previous prime is 8366599. The next prime is 8366629. The reversal of 8366609 is 9066638.

It is a happy number.

8366609 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6235009 + 2131600 = 2497^2 + 1460^2 .

It is a cyclic number.

It is not a de Polignac number, because 8366609 - 2⁸ = 8366353 is a prime.

It is not a weakly prime, because it can be changed into another prime (8366629) 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, 4183304 + 4183305.

It is an arithmetic number, because the mean of its divisors is an integer number (4183305).

Almost surely, 2^8366609 is an apocalyptic number.

It is an amenable number.

8366609 is a deficient number, since it is larger than the sum of its proper divisors (1).

8366609 is an equidigital number, since it uses as much as digits as its factorization.

8366609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 8366609 is about 2892.5091183953. The cubic root of 8366609 is about 203.0095605679.

The spelling of 8366609 in words is "eight million, three hundred sixty-six thousand, six hundred nine".