65724328 has 16 divisors (see below), whose sum is σ = 125254260. Its totient is φ = 32323200.

The previous prime is 65724319. The next prime is 65724331. The reversal of 65724328 is 82342756.

It can be written as a sum of positive squares in 2 ways, for example, as 38912644 + 26811684 = 6238^2 + 5178^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66853 + ... + 67828.

Almost surely, 2^65724328 is an apocalyptic number.

It is an amenable number.

65724328 is a deficient number, since it is larger than the sum of its proper divisors (59529932).

65724328 is a wasteful number, since it uses less digits than its factorization.

65724328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134748 (or 134744 counting only the distinct ones).

The product of its digits is 80640, while the sum is 37.

The square root of 65724328 is about 8107.0542122278. The cubic root of 65724328 is about 403.5605619560.

The spelling of 65724328 in words is "sixty-five million, seven hundred twenty-four thousand, three hundred twenty-eight".