65475728 has 10 divisors (see below), whose sum is σ = 126859254. Its totient is φ = 32737856.

The previous prime is 65475719. The next prime is 65475731. The reversal of 65475728 is 82757456.

It can be written as a sum of positive squares in only one way, i.e., 49730704 + 15745024 = 7052^2 + 3968^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2046101 + ... + 2046132.

Almost surely, 2^65475728 is an apocalyptic number.

It is an amenable number.

65475728 is a deficient number, since it is larger than the sum of its proper divisors (61383526).

65475728 is a wasteful number, since it uses less digits than its factorization.

65475728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4092241 (or 4092235 counting only the distinct ones).

The product of its digits is 470400, while the sum is 44.

The square root of 65475728 is about 8091.7073600075. The cubic root of 65475728 is about 403.0511011146.

The spelling of 65475728 in words is "sixty-five million, four hundred seventy-five thousand, seven hundred twenty-eight".