23601965 has 4 divisors (see below), whose sum is σ = 28322364. Its totient is φ = 18881568.

The previous prime is 23601959. The next prime is 23601973. The reversal of 23601965 is 56910632.

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 18412681 + 5189284 = 4291^2 + 2278^2 .

It is a cyclic number.

It is not a de Polignac number, because 23601965 - 2⁸ = 23601709 is a prime.

It is a super-2 number, since 2×23601965² = 1114105503722450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 2360192 + ... + 2360201.

It is an arithmetic number, because the mean of its divisors is an integer number (7080591).

Almost surely, 2^23601965 is an apocalyptic number.

It is an amenable number.

23601965 is a deficient number, since it is larger than the sum of its proper divisors (4720399).

23601965 is an equidigital number, since it uses as much as digits as its factorization.

23601965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4720398.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 23601965 is about 4858.1853608112. The cubic root of 23601965 is about 286.8463891643.

The spelling of 23601965 in words is "twenty-three million, six hundred one thousand, nine hundred sixty-five".