6528889 has 4 divisors (see below), whose sum is σ = 6534756. Its totient is φ = 6523024.

The previous prime is 6528887. The next prime is 6528917. The reversal of 6528889 is 9888256.

It is a happy number.

6528889 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, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4818025 + 1710864 = 2195^2 + 1308^2 .

It is a cyclic number.

It is not a de Polignac number, because 6528889 - 2¹ = 6528887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6528883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 694 + ... + 3679.

It is an arithmetic number, because the mean of its divisors is an integer number (1633689).

Almost surely, 2^6528889 is an apocalyptic number.

It is an amenable number.

6528889 is a deficient number, since it is larger than the sum of its proper divisors (5867).

6528889 is a wasteful number, since it uses less digits than its factorization.

6528889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5866.

The product of its digits is 276480, while the sum is 46.

The square root of 6528889 is about 2555.1690746407. The cubic root of 6528889 is about 186.9016326140.

The spelling of 6528889 in words is "six million, five hundred twenty-eight thousand, eight hundred eighty-nine".