5641840 has 40 divisors (see below), whose sum is σ = 13258080. Its totient is φ = 2232576.

The previous prime is 5641837. The next prime is 5641843. The reversal of 5641840 is 481465.

5641840 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (5641837) and next prime (5641843).

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 5641799 and 5641808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5641843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8397 + ... + 9043.

It is an arithmetic number, because the mean of its divisors is an integer number (331452).

Almost surely, 2^5641840 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 5641840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6629040).

5641840 is an abundant number, since it is smaller than the sum of its proper divisors (7616240).

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

5641840 is a wasteful number, since it uses less digits than its factorization.

5641840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769 (or 763 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 5641840 is about 2375.2557757008. The cubic root of 5641840 is about 178.0219642130.

The spelling of 5641840 in words is "five million, six hundred forty-one thousand, eight hundred forty".