5644540 has 24 divisors (see below), whose sum is σ = 12931632. Its totient is φ = 2052480.

The previous prime is 5644523. The next prime is 5644547. The reversal of 5644540 is 454465.

It is a junction number, because it is equal to n+sod(n) for n = 5644499 and 5644508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5644547) 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, 12609 + ... + 13048.

It is an arithmetic number, because the mean of its divisors is an integer number (538818).

Almost surely, 2^5644540 is an apocalyptic number.

It is an amenable number.

5644540 is an abundant number, since it is smaller than the sum of its proper divisors (7287092).

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

5644540 is a wasteful number, since it uses less digits than its factorization.

5644540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25677 (or 25675 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 5644540 is about 2375.8240675606. The cubic root of 5644540 is about 178.0503581795.

The spelling of 5644540 in words is "five million, six hundred forty-four thousand, five hundred forty".