65224224 has 96 divisors (see below), whose sum is σ = 204906240. Its totient is φ = 20065536.

The previous prime is 65224213. The next prime is 65224231. The reversal of 65224224 is 42242256.

It is a happy number.

65224224 is a `hidden beast` number, since 652 + 2 + 4 + 2 + 2 + 4 = 666.

65224224 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (27).

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 15 ways as a sum of consecutive naturals, for example, 8329 + ... + 14135.

It is an arithmetic number, because the mean of its divisors is an integer number (2134440).

Almost surely, 2^65224224 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 65224224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102453120).

65224224 is an abundant number, since it is smaller than the sum of its proper divisors (139682016).

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

65224224 is a wasteful number, since it uses less digits than its factorization.

65224224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5839 (or 5825 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 65224224 is about 8076.1515587562. The cubic root of 65224224 is about 402.5343751103.

The spelling of 65224224 in words is "sixty-five million, two hundred twenty-four thousand, two hundred twenty-four".