65520328 has 8 divisors (see below), whose sum is σ = 122850630. Its totient is φ = 32760160.

The previous prime is 65520319. The next prime is 65520331. The reversal of 65520328 is 82302556.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 62758084 + 2762244 = 7922^2 + 1662^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 65520328.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4095013 + ... + 4095028.

Almost surely, 2^65520328 is an apocalyptic number.

It is an amenable number.

65520328 is a deficient number, since it is larger than the sum of its proper divisors (57330302).

65520328 is a wasteful number, since it uses less digits than its factorization.

65520328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8190047 (or 8190043 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 65520328 is about 8094.4627987285. The cubic root of 65520328 is about 403.1425955743.

The spelling of 65520328 in words is "sixty-five million, five hundred twenty thousand, three hundred twenty-eight".