65332566 has 72 divisors (see below), whose sum is σ = 157103856. Its totient is φ = 19504800.

The previous prime is 65332549. The next prime is 65332577. The reversal of 65332566 is 66523356.

65332566 is a `hidden beast` number, since 65 + 3 + 32 + 566 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 65332566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 432591 + ... + 432741.

It is an arithmetic number, because the mean of its divisors is an integer number (2181998).

Almost surely, 2^65332566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65332566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78551928).

65332566 is an abundant number, since it is smaller than the sum of its proper divisors (91771290).

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

65332566 is a wasteful number, since it uses less digits than its factorization.

65332566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258 (or 212 counting only the distinct ones).

The product of its digits is 97200, while the sum is 36.

The square root of 65332566 is about 8082.8563020754. The cubic root of 65332566 is about 402.7571310725.

The spelling of 65332566 in words is "sixty-five million, three hundred thirty-two thousand, five hundred sixty-six".