8966609 has 2 divisors, whose sum is σ = 8966610. Its totient is φ = 8966608.

The previous prime is 8966603. The next prime is 8966621. The reversal of 8966609 is 9066698.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7006609 + 1960000 = 2647^2 + 1400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8966609 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8966609.

It is not a weakly prime, because it can be changed into another prime (8966603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4483304 + 4483305.

It is an arithmetic number, because the mean of its divisors is an integer number (4483305).

Almost surely, 2^8966609 is an apocalyptic number.

It is an amenable number.

8966609 is a deficient number, since it is larger than the sum of its proper divisors (1).

8966609 is an equidigital number, since it uses as much as digits as its factorization.

8966609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 8966609 is about 2994.4296618889. The cubic root of 8966609 is about 207.7508187755.

The spelling of 8966609 in words is "eight million, nine hundred sixty-six thousand, six hundred nine".