6628076569 has 9 divisors (see below), whose sum is σ = 7042368477. Its totient is φ = 6236887104.

The previous prime is 6628076557. The next prime is 6628076593. The reversal of 6628076569 is 9656708266.

It is a happy number.

The square root of 6628076569 is 81413.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 325622025 + 6302454544 = 18045^2 + 79388^2 .

It is not a de Polignac number, because 6628076569 - 2²¹ = 6625979417 is a prime.

It is a super-2 number, since 2×6628076569² = 87862798009053623522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6628076269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1381627 + ... + 1386415.

Almost surely, 2^6628076569 is an apocalyptic number.

6628076569 is the 81413-rd square number.

6628076569 is the 40707-th centered octagonal number.

It is an amenable number.

6628076569 is a deficient number, since it is larger than the sum of its proper divisors (414291908).

6628076569 is an frugal number, since it uses more digits than its factorization.

6628076569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9612 (or 4806 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 55.

The cubic root of 6628076569 is about 1878.4335609816.

The spelling of 6628076569 in words is "six billion, six hundred twenty-eight million, seventy-six thousand, five hundred sixty-nine".