65243328 has 56 divisors (see below), whose sum is σ = 173248320. Its totient is φ = 21669120.

The previous prime is 65243323. The next prime is 65243351. The reversal of 65243328 is 82334256.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (65243323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80043 + ... + 80853.

It is an arithmetic number, because the mean of its divisors is an integer number (3093720).

Almost surely, 2^65243328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65243328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86624160).

65243328 is an abundant number, since it is smaller than the sum of its proper divisors (108004992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65243328 is a wasteful number, since it uses less digits than its factorization.

65243328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245 (or 1235 counting only the distinct ones).

The product of its digits is 34560, while the sum is 33.

The square root of 65243328 is about 8077.3342137118. The cubic root of 65243328 is about 402.5736716863.

The spelling of 65243328 in words is "sixty-five million, two hundred forty-three thousand, three hundred twenty-eight".