65564224 has 28 divisors (see below), whose sum is σ = 141933168. Its totient is φ = 29801600.

The previous prime is 65564221. The next prime is 65564243. The reversal of 65564224 is 42246556.

It is a self number, because there is not a number n which added to its sum of digits gives 65564224.

It is not an unprimeable number, because it can be changed into a prime (65564221) 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, 45862 + ... + 47269.

Almost surely, 2^65564224 is an apocalyptic number.

65564224 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

65564224 is an abundant number, since it is smaller than the sum of its proper divisors (76368944).

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

65564224 is a wasteful number, since it uses less digits than its factorization.

65564224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93154 (or 93144 counting only the distinct ones).

The product of its digits is 57600, while the sum is 34.

The square root of 65564224 is about 8097.1738279476. The cubic root of 65564224 is about 403.2326052830.

The spelling of 65564224 in words is "sixty-five million, five hundred sixty-four thousand, two hundred twenty-four".