170659 has 4 divisors (see below), whose sum is σ = 171904. Its totient is φ = 169416.

The previous prime is 170647. The next prime is 170669. The reversal of 170659 is 956071.

It is a happy number.

170659 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 956071 = 31 ⋅30841.

It is a cyclic number.

It is not a de Polignac number, because 170659 - 2⁵ = 170627 is a prime.

It is a Duffinian number.

170659 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (170609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387 + ... + 700.

It is an arithmetic number, because the mean of its divisors is an integer number (42976).

2¹⁷⁰⁶⁵⁹ is an apocalyptic number.

170659 is a deficient number, since it is larger than the sum of its proper divisors (1245).

170659 is a wasteful number, since it uses less digits than its factorization.

170659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 170659 is about 413.1089444686. The cubic root of 170659 is about 55.4680713466.

The spelling of 170659 in words is "one hundred seventy thousand, six hundred fifty-nine".