6628207705 has 24 divisors (see below), whose sum is σ = 9337359240. Its totient is φ = 4503340800.

The previous prime is 6628207679. The next prime is 6628207717. The reversal of 6628207705 is 5077028266.

It can be written as a sum of positive squares in 4 ways, for example, as 776569689 + 5851638016 = 27867^2 + 76496^2 .

It is not a de Polignac number, because 6628207705 - 2⁷ = 6628207577 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97396 + ... + 150805.

It is an arithmetic number, because the mean of its divisors is an integer number (389056635).

Almost surely, 2^6628207705 is an apocalyptic number.

It is an amenable number.

6628207705 is a deficient number, since it is larger than the sum of its proper divisors (2709151535).

6628207705 is a wasteful number, since it uses less digits than its factorization.

6628207705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248329 (or 248322 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 43.

The square root of 6628207705 is about 81413.8053710794. The cubic root of 6628207705 is about 1878.4459491224.

The spelling of 6628207705 in words is "six billion, six hundred twenty-eight million, two hundred seven thousand, seven hundred five".