671371 has 4 divisors (see below), whose sum is σ = 673200. Its totient is φ = 669544.

The previous prime is 671369. The next prime is 671383. The reversal of 671371 is 173176.

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

It is a cyclic number.

It is not a de Polignac number, because 671371 - 2¹ = 671369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671471) 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, 151 + ... + 1168.

It is an arithmetic number, because the mean of its divisors is an integer number (168300).

2⁶⁷¹³⁷¹ is an apocalyptic number.

671371 is a deficient number, since it is larger than the sum of its proper divisors (1829).

671371 is a wasteful number, since it uses less digits than its factorization.

671371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1828.

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

The square root of 671371 is about 819.3723207431. The cubic root of 671371 is about 87.5630457197.

The spelling of 671371 in words is "six hundred seventy-one thousand, three hundred seventy-one".