5643869 has 24 divisors (see below), whose sum is σ = 7381728. Its totient is φ = 4263840.

The previous prime is 5643857. The next prime is 5643877. The reversal of 5643869 is 9683465.

It is not a de Polignac number, because 5643869 - 2⁸ = 5643613 is a prime.

It is a super-2 number, since 2×5643869² = 63706514578322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5643569) 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 23 ways as a sum of consecutive naturals, for example, 19802 + ... + 20084.

It is an arithmetic number, because the mean of its divisors is an integer number (307572).

Almost surely, 2^5643869 is an apocalyptic number.

It is an amenable number.

5643869 is a deficient number, since it is larger than the sum of its proper divisors (1737859).

5643869 is a wasteful number, since it uses less digits than its factorization.

5643869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345 (or 338 counting only the distinct ones).

The product of its digits is 155520, while the sum is 41.

The square root of 5643869 is about 2375.6828492036. The cubic root of 5643869 is about 178.0433025987.

The spelling of 5643869 in words is "five million, six hundred forty-three thousand, eight hundred sixty-nine".