170345 has 16 divisors (see below), whose sum is σ = 242688. Its totient is φ = 112320.

The previous prime is 170341. The next prime is 170347. The reversal of 170345 is 543071.

It is a happy number.

170345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 170345 - 2² = 170341 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (170341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1007 + ... + 1163.

It is an arithmetic number, because the mean of its divisors is an integer number (15168).

2¹⁷⁰³⁴⁵ is an apocalyptic number.

It is an amenable number.

170345 is a deficient number, since it is larger than the sum of its proper divisors (72343).

170345 is a wasteful number, since it uses less digits than its factorization.

170345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 170345 is about 412.7287244668. The cubic root of 170345 is about 55.4340314047.

It can be divided in two parts, 170 and 345, that added together give a palindrome (515).

The spelling of 170345 in words is "one hundred seventy thousand, three hundred forty-five".