23745065 has 4 divisors (see below), whose sum is σ = 28494084. Its totient is φ = 18996048.

The previous prime is 23745053. The next prime is 23745067. The reversal of 23745065 is 56054732.

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 18344089 + 5400976 = 4283^2 + 2324^2 .

It is a cyclic number.

It is not a de Polignac number, because 23745065 - 2⁴ = 23745049 is a prime.

It is a super-2 number, since 2×23745065² = 1127656223708450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23745067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2374502 + ... + 2374511.

It is an arithmetic number, because the mean of its divisors is an integer number (7123521).

Almost surely, 2^23745065 is an apocalyptic number.

It is an amenable number.

23745065 is a deficient number, since it is larger than the sum of its proper divisors (4749019).

23745065 is an equidigital number, since it uses as much as digits as its factorization.

23745065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4749018.

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 23745065 is about 4872.8908257830. The cubic root of 23745065 is about 287.4249432298.

Adding to 23745065 its reverse (56054732), we get a palindrome (79799797).

The spelling of 23745065 in words is "twenty-three million, seven hundred forty-five thousand, sixty-five".