173998 has 12 divisors (see below), whose sum is σ = 287280. Its totient is φ = 78980.

The previous prime is 173993. The next prime is 174007. The reversal of 173998 is 899371.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173993) by changing a digit.

173998 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 118 + ... + 601.

It is an arithmetic number, because the mean of its divisors is an integer number (23940).

2¹⁷³⁹⁹⁸ is an apocalyptic number.

173998 is a deficient number, since it is larger than the sum of its proper divisors (113282).

173998 is a wasteful number, since it uses less digits than its factorization.

173998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743 (or 732 counting only the distinct ones).

The product of its digits is 13608, while the sum is 37.

The square root of 173998 is about 417.1306749689. The cubic root of 173998 is about 55.8274878165.

The spelling of 173998 in words is "one hundred seventy-three thousand, nine hundred ninety-eight".