2423665 has 4 divisors (see below), whose sum is σ = 2908404. Its totient is φ = 1938928.

The previous prime is 2423651. The next prime is 2423669. The reversal of 2423665 is 5663242.

It is a happy number.

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 418609 + 2005056 = 647^2 + 1416^2 .

It is a cyclic number.

It is not a de Polignac number, because 2423665 - 2¹³ = 2415473 is a prime.

It is a Duffinian number.

2423665 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2423669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242362 + ... + 242371.

It is an arithmetic number, because the mean of its divisors is an integer number (727101).

2^2423665 is an apocalyptic number.

It is an amenable number.

2423665 is a deficient number, since it is larger than the sum of its proper divisors (484739).

2423665 is an equidigital number, since it uses as much as digits as its factorization.

2423665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484738.

The product of its digits is 8640, while the sum is 28.

The square root of 2423665 is about 1556.8124485628. The cubic root of 2423665 is about 134.3252106870.

The spelling of 2423665 in words is "two million, four hundred twenty-three thousand, six hundred sixty-five".