5563566 has 40 divisors (see below), whose sum is σ = 12693384. Its totient is φ = 1820880.

The previous prime is 5563517. The next prime is 5563583. The reversal of 5563566 is 6653655.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 5563566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9601 + ... + 10163.

Almost surely, 2^5563566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5563566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6346692).

5563566 is an abundant number, since it is smaller than the sum of its proper divisors (7129818).

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

5563566 is a wasteful number, since it uses less digits than its factorization.

5563566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638 (or 629 counting only the distinct ones).

The product of its digits is 81000, while the sum is 36.

The square root of 5563566 is about 2358.7212637359. The cubic root of 5563566 is about 177.1948443248.

The spelling of 5563566 in words is "five million, five hundred sixty-three thousand, five hundred sixty-six".