5645568769 has 9 divisors (see below), whose sum is σ = 5687732001. Its totient is φ = 5603717460.

The previous prime is 5645568749. The next prime is 5645568827. The reversal of 5645568769 is 9678655465.

The square root of 5645568769 is 75137.

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

It is not a de Polignac number, because 5645568769 - 2¹¹ = 5645566721 is a prime.

It is a super-2 number, since 2×5645568769² = 63744893451016350722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5645568749) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 17055934 + ... + 17056264.

Almost surely, 2^5645568769 is an apocalyptic number.

5645568769 is the 75137-th square number.

5645568769 is the 37569-th centered octagonal number.

It is an amenable number.

5645568769 is a deficient number, since it is larger than the sum of its proper divisors (42163232).

5645568769 is an frugal number, since it uses more digits than its factorization.

5645568769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116 (or 558 counting only the distinct ones).

The product of its digits is 54432000, while the sum is 61.

The cubic root of 5645568769 is about 1780.6117462404.

The spelling of 5645568769 in words is "five billion, six hundred forty-five million, five hundred sixty-eight thousand, seven hundred sixty-nine".