5644643 has 2 divisors, whose sum is σ = 5644644. Its totient is φ = 5644642.

The previous prime is 5644627. The next prime is 5644657. The reversal of 5644643 is 3464465.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5644643 - 2⁴ = 5644627 is a prime.

It is not a weakly prime, because it can be changed into another prime (5644673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2822321 + 2822322.

It is an arithmetic number, because the mean of its divisors is an integer number (2822322).

Almost surely, 2^5644643 is an apocalyptic number.

5644643 is a deficient number, since it is larger than the sum of its proper divisors (1).

5644643 is an equidigital number, since it uses as much as digits as its factorization.

5644643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 32.

The square root of 5644643 is about 2375.8457441509. The cubic root of 5644643 is about 178.0514411774.

The spelling of 5644643 in words is "five million, six hundred forty-four thousand, six hundred forty-three".