23041665 has 20 divisors (see below), whose sum is σ = 41305044. Its totient is φ = 12288672.

The previous prime is 23041651. The next prime is 23041673. The reversal of 23041665 is 56614032.

It can be written as a sum of positive squares in 2 ways, for example, as 5602689 + 17438976 = 2367^2 + 4176^2 .

It is not a de Polignac number, because 23041665 - 2⁵ = 23041633 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 28042 + ... + 28851.

Almost surely, 2^23041665 is an apocalyptic number.

It is an amenable number.

23041665 is a deficient number, since it is larger than the sum of its proper divisors (18263379).

23041665 is an equidigital number, since it uses as much as digits as its factorization.

23041665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56910 (or 56901 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 23041665 is about 4800.1734343667. The cubic root of 23041665 is about 284.5583186239.

Adding to 23041665 its reverse (56614032), we get a palindrome (79655697).

It can be divided in two parts, 2304 and 1665, that added together give a square (3969 = 63²).

The spelling of 23041665 in words is "twenty-three million, forty-one thousand, six hundred sixty-five".