173066 has 4 divisors (see below), whose sum is σ = 259602. Its totient is φ = 86532.

The previous prime is 173059. The next prime is 173081. The reversal of 173066 is 660371.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 172225 + 841 = 415^2 + 29^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43265 + ... + 43268.

2¹⁷³⁰⁶⁶ is an apocalyptic number.

173066 is a deficient number, since it is larger than the sum of its proper divisors (86536).

173066 is an equidigital number, since it uses as much as digits as its factorization.

173066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86535.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 173066 is about 416.0120190571. The cubic root of 173066 is about 55.7276315044.

The spelling of 173066 in words is "one hundred seventy-three thousand, sixty-six".