65504224 has 24 divisors (see below), whose sum is σ = 132109488. Its totient is φ = 31952640.

The previous prime is 65504203. The next prime is 65504227. The reversal of 65504224 is 42240556.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 65504192 and 65504201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65504227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23652 + ... + 26275.

It is an arithmetic number, because the mean of its divisors is an integer number (5504562).

Almost surely, 2^65504224 is an apocalyptic number.

It is an amenable number.

65504224 is an abundant number, since it is smaller than the sum of its proper divisors (66605264).

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

65504224 is a wasteful number, since it uses less digits than its factorization.

65504224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49978 (or 49970 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 65504224 is about 8093.4679835037. The cubic root of 65504224 is about 403.1095638902.

The spelling of 65504224 in words is "sixty-five million, five hundred four thousand, two hundred twenty-four".