5638165 has 16 divisors (see below), whose sum is σ = 7354368. Its totient is φ = 4124736.

The previous prime is 5638163. The next prime is 5638177. The reversal of 5638165 is 5618365.

It is a cyclic number.

It is not a de Polignac number, because 5638165 - 2¹ = 5638163 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

5638165 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 5638165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5638163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7914 + ... + 8596.

It is an arithmetic number, because the mean of its divisors is an integer number (459648).

Almost surely, 2^5638165 is an apocalyptic number.

It is an amenable number.

5638165 is a deficient number, since it is larger than the sum of its proper divisors (1716203).

5638165 is a wasteful number, since it uses less digits than its factorization.

5638165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828.

The product of its digits is 21600, while the sum is 34.

The square root of 5638165 is about 2374.4820487845. The cubic root of 5638165 is about 177.9833023095.

The spelling of 5638165 in words is "five million, six hundred thirty-eight thousand, one hundred sixty-five".