843641 has 8 divisors (see below), whose sum is σ = 873600. Its totient is φ = 814320.

The previous prime is 843629. The next prime is 843643. The reversal of 843641 is 146348.

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

It is a cyclic number.

It is not a de Polignac number, because 843641 - 2¹⁰ = 842617 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 843641.

It is not an unprimeable number, because it can be changed into a prime (843643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4571 + ... + 4751.

It is an arithmetic number, because the mean of its divisors is an integer number (109200).

2⁸⁴³⁶⁴¹ is an apocalyptic number.

It is an amenable number.

843641 is a deficient number, since it is larger than the sum of its proper divisors (29959).

843641 is a wasteful number, since it uses less digits than its factorization.

843641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319.

The product of its digits is 2304, while the sum is 26.

The square root of 843641 is about 918.4993195425. The cubic root of 843641 is about 94.4900094885.

Adding to 843641 its reverse (146348), we get a palindrome (989989).

The spelling of 843641 in words is "eight hundred forty-three thousand, six hundred forty-one".