411643 has 4 divisors (see below), whose sum is σ = 418680. Its totient is φ = 404608.

The previous prime is 411641. The next prime is 411667. The reversal of 411643 is 346114.

It is a happy number.

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 411643 - 2¹ = 411641 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 411643.

It is not an unprimeable number, because it can be changed into a prime (411641) 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 3 ways as a sum of consecutive naturals, for example, 3430 + ... + 3547.

It is an arithmetic number, because the mean of its divisors is an integer number (104670).

2⁴¹¹⁶⁴³ is an apocalyptic number.

411643 is a deficient number, since it is larger than the sum of its proper divisors (7037).

411643 is an equidigital number, since it uses as much as digits as its factorization.

411643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7036.

The product of its digits is 288, while the sum is 19.

The square root of 411643 is about 641.5941084518. The cubic root of 411643 is about 74.3886901334.

Adding to 411643 its reverse (346114), we get a palindrome (757757).

The spelling of 411643 in words is "four hundred eleven thousand, six hundred forty-three".