671173 has 4 divisors (see below), whose sum is σ = 675360. Its totient is φ = 666988.

The previous prime is 671161. The next prime is 671189. The reversal of 671173 is 371176.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 671173 - 2⁵ = 671141 is a prime.

It is a Duffinian number.

671173 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671123) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1843 + ... + 2176.

It is an arithmetic number, because the mean of its divisors is an integer number (168840).

2⁶⁷¹¹⁷³ is an apocalyptic number.

It is an amenable number.

671173 is a deficient number, since it is larger than the sum of its proper divisors (4187).

671173 is a wasteful number, since it uses less digits than its factorization.

671173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4186.

The product of its digits is 882, while the sum is 25.

The square root of 671173 is about 819.2514876398. The cubic root of 671173 is about 87.5544368742.

The spelling of 671173 in words is "six hundred seventy-one thousand, one hundred seventy-three".