5665538 has 8 divisors (see below), whose sum is σ = 8537088. Its totient is φ = 2819844.

The previous prime is 5665537. The next prime is 5665549. The reversal of 5665538 is 8355665.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a d-powerful number, because it can be written as 5⁷ + 6⁴ + 6⁸ + 5⁹ + 5⁹ + 3⁵ + 8 .

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 5906 + ... + 6797.

It is an arithmetic number, because the mean of its divisors is an integer number (1067136).

Almost surely, 2^5665538 is an apocalyptic number.

5665538 is a deficient number, since it is larger than the sum of its proper divisors (2871550).

5665538 is a wasteful number, since it uses less digits than its factorization.

5665538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12928.

The product of its digits is 108000, while the sum is 38.

The square root of 5665538 is about 2380.2390636237. The cubic root of 5665538 is about 178.2708706819.

The spelling of 5665538 in words is "five million, six hundred sixty-five thousand, five hundred thirty-eight".