5665536 has 54 divisors (see below), whose sum is σ = 16341780. Its totient is φ = 1887744.

The previous prime is 5665531. The next prime is 5665537. The reversal of 5665536 is 6355665.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a d-powerful number, because it can be written as 5⁷ + 6 + 6⁴ + 5⁹ + 5⁹ + 3⁵ + 6⁸ .

It is a self number, because there is not a number n which added to its sum of digits gives 5665536.

It is not an unprimeable number, because it can be changed into a prime (5665531) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1075 + ... + 3533.

Almost surely, 2^5665536 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 5665536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8170890).

5665536 is an abundant number, since it is smaller than the sum of its proper divisors (10676244).

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

5665536 is a wasteful number, since it uses less digits than its factorization.

5665536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2481 (or 2464 counting only the distinct ones).

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

The square root of 5665536 is about 2380.2386434977. The cubic root of 5665536 is about 178.2708497046.

The spelling of 5665536 in words is "five million, six hundred sixty-five thousand, five hundred thirty-six".