5566620 has 72 divisors (see below), whose sum is σ = 16514064. Its totient is φ = 1400832.

The previous prime is 5566619. The next prime is 5566657. The reversal of 5566620 is 266655.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21532 + ... + 21788.

It is an arithmetic number, because the mean of its divisors is an integer number (229362).

Almost surely, 2^5566620 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 5566620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8257032).

5566620 is an abundant number, since it is smaller than the sum of its proper divisors (10947444).

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

5566620 is a wasteful number, since it uses less digits than its factorization.

5566620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307 (or 286 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 5566620 is about 2359.3685595939. The cubic root of 5566620 is about 177.2272608281.

The spelling of 5566620 in words is "five million, five hundred sixty-six thousand, six hundred twenty".