170609 has 2 divisors, whose sum is σ = 170610. Its totient is φ = 170608.

The previous prime is 170603. The next prime is 170627. The reversal of 170609 is 906071.

It is a happy number.

170609 is digitally balanced in base 2, 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., 160000 + 10609 = 400^2 + 103^2 .

It is a cyclic number.

It is not a de Polignac number, because 170609 - 2⁸ = 170353 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (170603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85304 + 85305.

It is an arithmetic number, because the mean of its divisors is an integer number (85305).

2¹⁷⁰⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

170609 is a deficient number, since it is larger than the sum of its proper divisors (1).

170609 is an equidigital number, since it uses as much as digits as its factorization.

170609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 170609 is about 413.0484233114. The cubic root of 170609 is about 55.4626537703.

The spelling of 170609 in words is "one hundred seventy thousand, six hundred nine".