6628489287 has 16 divisors (see below), whose sum is σ = 10105627392. Its totient is φ = 3785806080.

The previous prime is 6628489243. The next prime is 6628489297. The reversal of 6628489287 is 7829848266.

It is not a de Polignac number, because 6628489287 - 2¹⁰ = 6628488263 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6628489287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6628489237) 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, 35889 + ... + 120602.

It is an arithmetic number, because the mean of its divisors is an integer number (631601712).

Almost surely, 2^6628489287 is an apocalyptic number.

6628489287 is a deficient number, since it is larger than the sum of its proper divisors (3477138105).

6628489287 is a wasteful number, since it uses less digits than its factorization.

6628489287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158518.

The product of its digits is 18579456, while the sum is 60.

The square root of 6628489287 is about 81415.5346785858. The cubic root of 6628489287 is about 1878.4725490270.

The spelling of 6628489287 in words is "six billion, six hundred twenty-eight million, four hundred eighty-nine thousand, two hundred eighty-seven".