6579943 has 4 divisors (see below), whose sum is σ = 6598240. Its totient is φ = 6561648.

The previous prime is 6579941. The next prime is 6579959. The reversal of 6579943 is 3499756.

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 6579943 - 2¹ = 6579941 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 6579943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6579941) 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, 8598 + ... + 9331.

It is an arithmetic number, because the mean of its divisors is an integer number (1649560).

Almost surely, 2^6579943 is an apocalyptic number.

6579943 is a deficient number, since it is larger than the sum of its proper divisors (18297).

6579943 is a wasteful number, since it uses less digits than its factorization.

6579943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18296.

The product of its digits is 204120, while the sum is 43.

The square root of 6579943 is about 2565.1399571953. The cubic root of 6579943 is about 187.3875402655.

It can be divided in two parts, 65 and 79943, that added together give a palindrome (80008).

The spelling of 6579943 in words is "six million, five hundred seventy-nine thousand, nine hundred forty-three".