6628513566 has 64 divisors (see below), whose sum is σ = 14115741696. Its totient is φ = 2070684000.

The previous prime is 6628513561. The next prime is 6628513621. The reversal of 6628513566 is 6653158266.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6628513561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1634241 + ... + 1638291.

It is an arithmetic number, because the mean of its divisors is an integer number (220558464).

Almost surely, 2^6628513566 is an apocalyptic number.

6628513566 is an abundant number, since it is smaller than the sum of its proper divisors (7487228130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6628513566 is a wasteful number, since it uses less digits than its factorization.

6628513566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4317.

The product of its digits is 1555200, while the sum is 48.

The square root of 6628513566 is about 81415.6837839000. The cubic root of 6628513566 is about 1878.4748425300.

The spelling of 6628513566 in words is "six billion, six hundred twenty-eight million, five hundred thirteen thousand, five hundred sixty-six".