65564256 has 48 divisors (see below), whose sum is σ = 177666048. Its totient is φ = 21148800.

The previous prime is 65564243. The next prime is 65564267. The reversal of 65564256 is 65246556.

It is a happy number.

65564256 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 (48).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 8040 + ... + 13991.

It is an arithmetic number, because the mean of its divisors is an integer number (3701376).

Almost surely, 2^65564256 is an apocalyptic number.

It is an amenable number.

65564256 is an abundant number, since it is smaller than the sum of its proper divisors (112101792).

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

65564256 is a wasteful number, since it uses less digits than its factorization.

65564256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22075 (or 22067 counting only the distinct ones).

The product of its digits is 216000, while the sum is 39.

The square root of 65564256 is about 8097.1758039455. The cubic root of 65564256 is about 403.2326708850.

The spelling of 65564256 in words is "sixty-five million, five hundred sixty-four thousand, two hundred fifty-six".