65564226 has 72 divisors (see below), whose sum is σ = 175855680. Its totient is φ = 17286048.

The previous prime is 65564221. The next prime is 65564243. The reversal of 65564226 is 62246556.

65564226 is a `hidden beast` number, since 6 + 5 + 5 + 642 + 2 + 6 = 666.

65564226 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65564221) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 19755 + ... + 22833.

It is an arithmetic number, because the mean of its divisors is an integer number (2442440).

Almost surely, 2^65564226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65564226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87927840).

65564226 is an abundant number, since it is smaller than the sum of its proper divisors (110291454).

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

65564226 is a wasteful number, since it uses less digits than its factorization.

65564226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3120 (or 3104 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 65564226 is about 8097.1739514475. The cubic root of 65564226 is about 403.2326093831.

The spelling of 65564226 in words is "sixty-five million, five hundred sixty-four thousand, two hundred twenty-six".