23561065 has 32 divisors (see below), whose sum is σ = 33094656. Its totient is φ = 15912960.

The previous prime is 23561063. The next prime is 23561071. The reversal of 23561065 is 56016532.

It is not a de Polignac number, because 23561065 - 2¹ = 23561063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23561063) 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 31 ways as a sum of consecutive naturals, for example, 105544 + ... + 105766.

It is an arithmetic number, because the mean of its divisors is an integer number (1034208).

Almost surely, 2^23561065 is an apocalyptic number.

It is an amenable number.

23561065 is a deficient number, since it is larger than the sum of its proper divisors (9533591).

23561065 is a wasteful number, since it uses less digits than its factorization.

23561065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 23561065 is about 4853.9741449662. The cubic root of 23561065 is about 286.6806006988.

Adding to 23561065 its reverse (56016532), we get a palindrome (79577597).

The spelling of 23561065 in words is "twenty-three million, five hundred sixty-one thousand, sixty-five".