671165 has 8 divisors (see below), whose sum is σ = 878688. Its totient is φ = 488080.

The previous prime is 671161. The next prime is 671189. The reversal of 671165 is 561176.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 671165 - 2² = 671161 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6047 + ... + 6156.

It is an arithmetic number, because the mean of its divisors is an integer number (109836).

2⁶⁷¹¹⁶⁵ is an apocalyptic number.

It is an amenable number.

671165 is a deficient number, since it is larger than the sum of its proper divisors (207523).

671165 is a wasteful number, since it uses less digits than its factorization.

671165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12219.

The product of its digits is 1260, while the sum is 26.

The square root of 671165 is about 819.2466051196. The cubic root of 671165 is about 87.5540890064.

It can be divided in two parts, 6711 and 65, that added together give a palindrome (6776).

The spelling of 671165 in words is "six hundred seventy-one thousand, one hundred sixty-five".