65128804 has 24 divisors (see below), whose sum is σ = 123275768. Its totient is φ = 29928960.

The previous prime is 65128783. The next prime is 65128813. The reversal of 65128804 is 40882156.

65128804 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 4 ways, for example, as 5992704 + 59136100 = 2448^2 + 7690^2 .

It is a super-2 number, since 2×65128804² = 8483522220940832, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 65128804.

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 7 ways as a sum of consecutive naturals, for example, 9934 + ... + 15130.

Almost surely, 2^65128804 is an apocalyptic number.

It is an amenable number.

65128804 is a deficient number, since it is larger than the sum of its proper divisors (58146964).

65128804 is a wasteful number, since it uses less digits than its factorization.

65128804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5455 (or 5453 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 65128804 is about 8070.2418798943. The cubic root of 65128804 is about 402.3379829646.

The spelling of 65128804 in words is "sixty-five million, one hundred twenty-eight thousand, eight hundred four".