65328530 has 16 divisors (see below), whose sum is σ = 118805400. Its totient is φ = 25861632.

The previous prime is 65328509. The next prime is 65328583. The reversal of 65328530 is 3582356.

It can be written as a sum of positive squares in 4 ways, for example, as 26925721 + 38402809 = 5189^2 + 6197^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32705 + ... + 34644.

Almost surely, 2^65328530 is an apocalyptic number.

65328530 is a deficient number, since it is larger than the sum of its proper divisors (53476870).

65328530 is a wasteful number, since it uses less digits than its factorization.

65328530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67453.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 65328530 is about 8082.6066340012. The cubic root of 65328530 is about 402.7488372953.

The spelling of 65328530 in words is "sixty-five million, three hundred twenty-eight thousand, five hundred thirty".