170489 has 6 divisors (see below), whose sum is σ = 187530. Its totient is φ = 154880.

The previous prime is 170483. The next prime is 170497. The reversal of 170489 is 984071.

It can be written as a sum of positive squares in only one way, i.e., 94864 + 75625 = 308^2 + 275^2 .

It is not a de Polignac number, because 170489 - 2⁴ = 170473 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 170489.

It is not an unprimeable number, because it can be changed into a prime (170483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 584 + ... + 825.

It is an arithmetic number, because the mean of its divisors is an integer number (31255).

2¹⁷⁰⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

170489 is a deficient number, since it is larger than the sum of its proper divisors (17041).

170489 is a wasteful number, since it uses less digits than its factorization.

170489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431 (or 1420 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 170489 is about 412.9031363407. The cubic root of 170489 is about 55.4496472672.

The spelling of 170489 in words is "one hundred seventy thousand, four hundred eighty-nine".