5643636 has 12 divisors (see below), whose sum is σ = 13168512. Its totient is φ = 1881208.

The previous prime is 5643623. The next prime is 5643641. The reversal of 5643636 is 6363465.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

5643636 is a modest number, since divided by 3636 gives 564 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 5643597 and 5643606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235140 + ... + 235163.

It is an arithmetic number, because the mean of its divisors is an integer number (1097376).

Almost surely, 2^5643636 is an apocalyptic number.

It is an amenable number.

5643636 is an abundant number, since it is smaller than the sum of its proper divisors (7524876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5643636 is a wasteful number, since it uses less digits than its factorization.

5643636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470310 (or 470308 counting only the distinct ones).

The product of its digits is 38880, while the sum is 33.

The square root of 5643636 is about 2375.6338101652. The cubic root of 5643636 is about 178.0408524673.

The spelling of 5643636 in words is "five million, six hundred forty-three thousand, six hundred thirty-six".