65243872 has 24 divisors (see below), whose sum is σ = 135210600. Its totient is φ = 30904704.

The previous prime is 65243861. The next prime is 65243887. The reversal of 65243872 is 27834256.

65243872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3 ways as a sum of consecutive naturals, for example, 53047 + ... + 54262.

It is an arithmetic number, because the mean of its divisors is an integer number (5633775).

Almost surely, 2^65243872 is an apocalyptic number.

It is an amenable number.

65243872 is an abundant number, since it is smaller than the sum of its proper divisors (69966728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65243872 is a wasteful number, since it uses less digits than its factorization.

65243872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107338 (or 107330 counting only the distinct ones).

The product of its digits is 80640, while the sum is 37.

The square root of 65243872 is about 8077.3678881180. The cubic root of 65243872 is about 402.5747905719.

The spelling of 65243872 in words is "sixty-five million, two hundred forty-three thousand, eight hundred seventy-two".