23873665 has 4 divisors (see below), whose sum is σ = 28648404. Its totient is φ = 19098928.

The previous prime is 23873659. The next prime is 23873683. The reversal of 23873665 is 56637832.

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 16056049 + 7817616 = 4007^2 + 2796^2 .

It is a cyclic number.

It is not a de Polignac number, because 23873665 - 2⁹ = 23873153 is a prime.

It is a Smith number, since the sum of its digits (40) 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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2387362 + ... + 2387371.

It is an arithmetic number, because the mean of its divisors is an integer number (7162101).

Almost surely, 2^23873665 is an apocalyptic number.

It is an amenable number.

23873665 is a deficient number, since it is larger than the sum of its proper divisors (4774739).

23873665 is an equidigital number, since it uses as much as digits as its factorization.

23873665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4774738.

The product of its digits is 181440, while the sum is 40.

The square root of 23873665 is about 4886.0684604291. The cubic root of 23873665 is about 287.9428939308.

The spelling of 23873665 in words is "twenty-three million, eight hundred seventy-three thousand, six hundred sixty-five".