6628287641 has 8 divisors (see below), whose sum is σ = 7019255880. Its totient is φ = 6237438208.

The previous prime is 6628287577. The next prime is 6628287703. The reversal of 6628287641 is 1467828266.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2058527641 + 4569760000 = 45371^2 + 67600^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6628287641 - 2⁶ = 6628287577 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6628287641.

It is not an unprimeable number, because it can be changed into a prime (6628281641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101855 + ... + 153723.

It is an arithmetic number, because the mean of its divisors is an integer number (877406985).

Almost surely, 2^6628287641 is an apocalyptic number.

It is an amenable number.

6628287641 is a deficient number, since it is larger than the sum of its proper divisors (390968239).

6628287641 is a wasteful number, since it uses less digits than its factorization.

6628287641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59403.

The product of its digits is 1548288, while the sum is 50.

The square root of 6628287641 is about 81414.2962937100. The cubic root of 6628287641 is about 1878.4535004273.

The spelling of 6628287641 in words is "six billion, six hundred twenty-eight million, two hundred eighty-seven thousand, six hundred forty-one".