5641566 has 48 divisors (see below), whose sum is σ = 13570560. Its totient is φ = 1557360.

The previous prime is 5641553. The next prime is 5641577. The reversal of 5641566 is 6651465.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8805 + ... + 9423.

It is an arithmetic number, because the mean of its divisors is an integer number (282720).

Almost surely, 2^5641566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5641566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6785280).

5641566 is an abundant number, since it is smaller than the sum of its proper divisors (7928994).

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

5641566 is a wasteful number, since it uses less digits than its factorization.

5641566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669 (or 662 counting only the distinct ones).

The product of its digits is 21600, while the sum is 33.

The square root of 5641566 is about 2375.1980970016. The cubic root of 5641566 is about 178.0190822449.

The spelling of 5641566 in words is "five million, six hundred forty-one thousand, five hundred sixty-six".