6589991 has 4 divisors (see below), whose sum is σ = 6615312. Its totient is φ = 6564672.

The previous prime is 6589981. The next prime is 6589993. The reversal of 6589991 is 1999856.

6589991 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 6589991 - 2¹⁸ = 6327847 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6589993) 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 in 3 ways as a sum of consecutive naturals, for example, 12266 + ... + 12791.

It is an arithmetic number, because the mean of its divisors is an integer number (1653828).

Almost surely, 2^6589991 is an apocalyptic number.

6589991 is a deficient number, since it is larger than the sum of its proper divisors (25321).

6589991 is a wasteful number, since it uses less digits than its factorization.

6589991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25320.

The product of its digits is 174960, while the sum is 47.

The square root of 6589991 is about 2567.0977776470. The cubic root of 6589991 is about 187.4828760658.

The spelling of 6589991 in words is "six million, five hundred eighty-nine thousand, nine hundred ninety-one".