170945 has 8 divisors (see below), whose sum is σ = 207360. Its totient is φ = 135280.

The previous prime is 170927. The next prime is 170953. The reversal of 170945 is 549071.

170945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 170945 - 2⁶ = 170881 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 800 + ... + 990.

It is an arithmetic number, because the mean of its divisors is an integer number (25920).

2¹⁷⁰⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

170945 is a deficient number, since it is larger than the sum of its proper divisors (36415).

170945 is a wasteful number, since it uses less digits than its factorization.

170945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 170945 is about 413.4549552249. The cubic root of 170945 is about 55.4990395635.

The spelling of 170945 in words is "one hundred seventy thousand, nine hundred forty-five".