65913728 has 32 divisors (see below), whose sum is σ = 131733000. Its totient is φ = 32851456.

The previous prime is 65913713. The next prime is 65913737. The reversal of 65913728 is 82731956.

65913728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (32).

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, 53018 + ... + 54246.

Almost surely, 2^65913728 is an apocalyptic number.

It is an amenable number.

65913728 is a deficient number, since it is larger than the sum of its proper divisors (65819272).

65913728 is a wasteful number, since it uses less digits than its factorization.

65913728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662 (or 1650 counting only the distinct ones).

The product of its digits is 90720, while the sum is 41.

The square root of 65913728 is about 8118.7269938088. The cubic root of 65913728 is about 403.9478415165.

The spelling of 65913728 in words is "sixty-five million, nine hundred thirteen thousand, seven hundred twenty-eight".