5644940 has 48 divisors (see below), whose sum is σ = 13790784. Its totient is φ = 1900800.

The previous prime is 5644939. The next prime is 5644963. The reversal of 5644940 is 494465.

It is a happy number.

It is a zygodrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 5644897 and 5644906.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8210 + ... + 8870.

It is an arithmetic number, because the mean of its divisors is an integer number (287308).

Almost surely, 2^5644940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5644940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6895392).

5644940 is an abundant number, since it is smaller than the sum of its proper divisors (8145844).

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

5644940 is a wasteful number, since it uses less digits than its factorization.

5644940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738 (or 736 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 5644940 is about 2375.9082473867. The cubic root of 5644940 is about 178.0545639229.

The spelling of 5644940 in words is "five million, six hundred forty-four thousand, nine hundred forty".