4523665 has 4 divisors (see below), whose sum is σ = 5428404. Its totient is φ = 3618928.

The previous prime is 4523647. The next prime is 4523669. The reversal of 4523665 is 5663254.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 495616 + 4028049 = 704^2 + 2007^2 .

It is a cyclic number.

It is not a de Polignac number, because 4523665 - 2⁵ = 4523633 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4523669) 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, 452362 + ... + 452371.

It is an arithmetic number, because the mean of its divisors is an integer number (1357101).

Almost surely, 2^4523665 is an apocalyptic number.

It is an amenable number.

4523665 is a deficient number, since it is larger than the sum of its proper divisors (904739).

4523665 is an equidigital number, since it uses as much as digits as its factorization.

4523665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904738.

The product of its digits is 21600, while the sum is 31.

The square root of 4523665 is about 2126.8909233903. The cubic root of 4523665 is about 165.3852644093.

The spelling of 4523665 in words is "four million, five hundred twenty-three thousand, six hundred sixty-five".