5629644865 has 32 divisors (see below), whose sum is σ = 7552530720. Its totient is φ = 3999830016.

The previous prime is 5629644859. The next prime is 5629644869. The reversal of 5629644865 is 5684469265.

It can be written as a sum of positive squares in 16 ways, for example, as 370639504 + 5259005361 = 19252^2 + 72519^2 .

It is not a de Polignac number, because 5629644865 - 2¹⁵ = 5629612097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5629644869) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 547209 + ... + 557401.

It is an arithmetic number, because the mean of its divisors is an integer number (236016585).

Almost surely, 2^5629644865 is an apocalyptic number.

It is an amenable number.

5629644865 is a deficient number, since it is larger than the sum of its proper divisors (1922885855).

5629644865 is a wasteful number, since it uses less digits than its factorization.

5629644865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10533.

The product of its digits is 12441600, while the sum is 55.

The square root of 5629644865 is about 75030.9593767799. The cubic root of 5629644865 is about 1778.9360372465.

The spelling of 5629644865 in words is "five billion, six hundred twenty-nine million, six hundred forty-four thousand, eight hundred sixty-five".