5565644 has 24 divisors (see below), whose sum is σ = 11198880. Its totient is φ = 2370816.

The previous prime is 5565643. The next prime is 5565667. The reversal of 5565644 is 4465655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5565641) 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, 5012 + ... + 6020.

It is an arithmetic number, because the mean of its divisors is an integer number (466620).

Almost surely, 2^5565644 is an apocalyptic number.

It is an amenable number.

5565644 is an abundant number, since it is smaller than the sum of its proper divisors (5633236).

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

5565644 is a wasteful number, since it uses less digits than its factorization.

5565644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217 (or 1215 counting only the distinct ones).

The product of its digits is 72000, while the sum is 35.

The square root of 5565644 is about 2359.1617155252. The cubic root of 5565644 is about 177.2169024229.

The spelling of 5565644 in words is "five million, five hundred sixty-five thousand, six hundred forty-four".