65906728 has 16 divisors (see below), whose sum is σ = 123732180. Its totient is φ = 32911488.

The previous prime is 65906693. The next prime is 65906749. The reversal of 65906728 is 82760956.

65906728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 43797924 + 22108804 = 6618^2 + 4702^2 .

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, 2050 + ... + 11662.

Almost surely, 2^65906728 is an apocalyptic number.

It is an amenable number.

65906728 is a deficient number, since it is larger than the sum of its proper divisors (57825452).

65906728 is a wasteful number, since it uses less digits than its factorization.

65906728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10476 (or 10472 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 65906728 is about 8118.2958802941. The cubic root of 65906728 is about 403.9335413342.

The spelling of 65906728 in words is "sixty-five million, nine hundred six thousand, seven hundred twenty-eight".