170643 has 8 divisors (see below), whose sum is σ = 248256. Its totient is φ = 103400.

The previous prime is 170641. The next prime is 170647. The reversal of 170643 is 346071.

170643 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 170643 - 2¹ = 170641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (170641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2553 + ... + 2618.

It is an arithmetic number, because the mean of its divisors is an integer number (31032).

2¹⁷⁰⁶⁴³ is an apocalyptic number.

170643 is a deficient number, since it is larger than the sum of its proper divisors (77613).

170643 is a wasteful number, since it uses less digits than its factorization.

170643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5185.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 170643 is about 413.0895786630. The cubic root of 170643 is about 55.4663378373.

The spelling of 170643 in words is "one hundred seventy thousand, six hundred forty-three".