671413 has 4 divisors (see below), whose sum is σ = 675468. Its totient is φ = 667360.

The previous prime is 671401. The next prime is 671417. The reversal of 671413 is 314176.

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

It can be written as a sum of positive squares in 2 ways, for example, as 528529 + 142884 = 727^2 + 378^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671413 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 (671417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1768 + ... + 2113.

It is an arithmetic number, because the mean of its divisors is an integer number (168867).

2⁶⁷¹⁴¹³ is an apocalyptic number.

It is an amenable number.

671413 is a deficient number, since it is larger than the sum of its proper divisors (4055).

671413 is a wasteful number, since it uses less digits than its factorization.

671413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4054.

The product of its digits is 504, while the sum is 22.

The square root of 671413 is about 819.3979497167. The cubic root of 671413 is about 87.5648716208.

Adding to 671413 its reverse (314176), we get a palindrome (985589).

The spelling of 671413 in words is "six hundred seventy-one thousand, four hundred thirteen".