173604 has 48 divisors (see below), whose sum is σ = 459648. Its totient is φ = 50688.

The previous prime is 173599. The next prime is 173617. The reversal of 173604 is 406371.

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4674 + ... + 4710.

It is an arithmetic number, because the mean of its divisors is an integer number (9576).

2¹⁷³⁶⁰⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 173604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229824).

173604 is an abundant number, since it is smaller than the sum of its proper divisors (286044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

173604 is a wasteful number, since it uses less digits than its factorization.

173604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84 (or 82 counting only the distinct ones).

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

The square root of 173604 is about 416.6581332460. The cubic root of 173604 is about 55.7853174972.

Adding to 173604 its reverse (406371), we get a palindrome (579975).

It can be divided in two parts, 173 and 604, that added together give a palindrome (777).

The spelling of 173604 in words is "one hundred seventy-three thousand, six hundred four".