23973965 has 8 divisors (see below), whose sum is σ = 29546520. Its totient is φ = 18660672.

The previous prime is 23973959. The next prime is 23973973. The reversal of 23973965 is 56937932.

It can be written as a sum of positive squares in 4 ways, for example, as 3786916 + 20187049 = 1946^2 + 4493^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23973965 - 2⁴ = 23973949 is a prime.

It is a Curzon number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 64610 + ... + 64979.

It is an arithmetic number, because the mean of its divisors is an integer number (3693315).

Almost surely, 2^23973965 is an apocalyptic number.

It is an amenable number.

23973965 is a deficient number, since it is larger than the sum of its proper divisors (5572555).

23973965 is a wasteful number, since it uses less digits than its factorization.

23973965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129631.

The product of its digits is 306180, while the sum is 44.

The square root of 23973965 is about 4896.3215784913. The cubic root of 23973965 is about 288.3455736355.

The spelling of 23973965 in words is "twenty-three million, nine hundred seventy-three thousand, nine hundred sixty-five".