5644891 has 8 divisors (see below), whose sum is σ = 6480864. Its totient is φ = 4816320.

The previous prime is 5644889. The next prime is 5644907. The reversal of 5644891 is 1984465.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5644891 - 2¹ = 5644889 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5644891.

It is not an unprimeable number, because it can be changed into a prime (5644801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100 + ... + 3361.

It is an arithmetic number, because the mean of its divisors is an integer number (810108).

Almost surely, 2^5644891 is an apocalyptic number.

5644891 is a deficient number, since it is larger than the sum of its proper divisors (835973).

5644891 is a wasteful number, since it uses less digits than its factorization.

5644891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3701.

The product of its digits is 34560, while the sum is 37.

The square root of 5644891 is about 2375.8979355183. The cubic root of 5644891 is about 178.0540487300.

The spelling of 5644891 in words is "five million, six hundred forty-four thousand, eight hundred ninety-one".