173365 has 4 divisors (see below), whose sum is σ = 208044. Its totient is φ = 138688.

The previous prime is 173359. The next prime is 173429. The reversal of 173365 is 563371.

It is a happy number.

173365 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: 563371 = 499 ⋅1129.

It can be written as a sum of positive squares in 2 ways, for example, as 33489 + 139876 = 183^2 + 374^2 .

It is a cyclic number.

It is not a de Polignac number, because 173365 - 2³ = 173357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17332 + ... + 17341.

It is an arithmetic number, because the mean of its divisors is an integer number (52011).

2¹⁷³³⁶⁵ is an apocalyptic number.

It is an amenable number.

173365 is a deficient number, since it is larger than the sum of its proper divisors (34679).

173365 is an equidigital number, since it uses as much as digits as its factorization.

173365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34678.

The product of its digits is 1890, while the sum is 25.

The square root of 173365 is about 416.3712285929. The cubic root of 173365 is about 55.7597059254.

The spelling of 173365 in words is "one hundred seventy-three thousand, three hundred sixty-five".