671141 has 2 divisors, whose sum is σ = 671142. Its totient is φ = 671140.

The previous prime is 671131. The next prime is 671159. The reversal of 671141 is 141176.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 450241 + 220900 = 671^2 + 470^2 .

It is a cyclic number.

It is not a de Polignac number, because 671141 - 2¹⁸ = 408997 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671131) 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 as a sum of consecutive naturals, namely, 335570 + 335571.

It is an arithmetic number, because the mean of its divisors is an integer number (335571).

2⁶⁷¹¹⁴¹ is an apocalyptic number.

It is an amenable number.

671141 is a deficient number, since it is larger than the sum of its proper divisors (1).

671141 is an equidigital number, since it uses as much as digits as its factorization.

671141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 168, while the sum is 20.

The square root of 671141 is about 819.2319573845. The cubic root of 671141 is about 87.5530453867.

The spelling of 671141 in words is "six hundred seventy-one thousand, one hundred forty-one".