65627728 has 10 divisors (see below), whose sum is σ = 127153754. Its totient is φ = 32813856.

The previous prime is 65627711. The next prime is 65627741. The reversal of 65627728 is 82772656.

65627728 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 only one way, i.e., 38044224 + 27583504 = 6168^2 + 5252^2 .

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 as a sum of consecutive naturals, namely, 2050851 + ... + 2050882.

Almost surely, 2^65627728 is an apocalyptic number.

It is an amenable number.

65627728 is a deficient number, since it is larger than the sum of its proper divisors (61526026).

65627728 is a wasteful number, since it uses less digits than its factorization.

65627728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4101741 (or 4101735 counting only the distinct ones).

The product of its digits is 282240, while the sum is 43.

The square root of 65627728 is about 8101.0942470755. The cubic root of 65627728 is about 403.3627505504.

The spelling of 65627728 in words is "sixty-five million, six hundred twenty-seven thousand, seven hundred twenty-eight".