6659389 has 16 divisors (see below), whose sum is σ = 7649280. Its totient is φ = 5742000.

The previous prime is 6659377. The next prime is 6659399. The reversal of 6659389 is 9839566.

It is not a de Polignac number, because 6659389 - 2¹⁵ = 6626621 is a prime.

It is a Duffinian number.

Its product of digits (349920) is a multiple of the sum of its prime divisors (432).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6659369) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19954 + ... + 20284.

It is an arithmetic number, because the mean of its divisors is an integer number (478080).

Almost surely, 2^6659389 is an apocalyptic number.

It is an amenable number.

6659389 is a deficient number, since it is larger than the sum of its proper divisors (989891).

6659389 is a wasteful number, since it uses less digits than its factorization.

6659389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432.

The product of its digits is 349920, while the sum is 46.

The square root of 6659389 is about 2580.5791985521. The cubic root of 6659389 is about 188.1386953750.

The spelling of 6659389 in words is "six million, six hundred fifty-nine thousand, three hundred eighty-nine".