173603 has 4 divisors (see below), whose sum is σ = 182760. Its totient is φ = 164448.

The previous prime is 173599. The next prime is 173617. The reversal of 173603 is 306371.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 306371 = 13 ⋅23567.

It is a cyclic number.

It is not a de Polignac number, because 173603 - 2² = 173599 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (173683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4550 + ... + 4587.

It is an arithmetic number, because the mean of its divisors is an integer number (45690).

2¹⁷³⁶⁰³ is an apocalyptic number.

173603 is a deficient number, since it is larger than the sum of its proper divisors (9157).

173603 is an equidigital number, since it uses as much as digits as its factorization.

173603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9156.

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 173603 is about 416.6569332196. The cubic root of 173603 is about 55.7852103848.

Adding to 173603 its reverse (306371), we get a palindrome (479974).

The spelling of 173603 in words is "one hundred seventy-three thousand, six hundred three".