5643540836 has 12 divisors (see below), whose sum is σ = 9966804540. Its totient is φ = 2795882400.

The previous prime is 5643540827. The next prime is 5643540841. The reversal of 5643540836 is 6380453465.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4386412900 + 1257127936 = 66230^2 + 35456^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6471515 + ... + 6472386.

It is an arithmetic number, because the mean of its divisors is an integer number (830567045).

Almost surely, 2^5643540836 is an apocalyptic number.

It is an amenable number.

5643540836 is a deficient number, since it is larger than the sum of its proper divisors (4323263704).

5643540836 is a wasteful number, since it uses less digits than its factorization.

5643540836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12944014 (or 12944012 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 44.

The square root of 5643540836 is about 75123.5038852688. The cubic root of 5643540836 is about 1780.3985174282.

The spelling of 5643540836 in words is "five billion, six hundred forty-three million, five hundred forty thousand, eight hundred thirty-six".