65563632 has 60 divisors (see below), whose sum is σ = 186621240. Its totient is φ = 21481344.

The previous prime is 65563621. The next prime is 65563649. The reversal of 65563632 is 23636556.

65563632 is a `hidden beast` number, since 65 + 563 + 6 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4638 + ... + 12354.

It is an arithmetic number, because the mean of its divisors is an integer number (3110354).

Almost surely, 2^65563632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65563632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93310620).

65563632 is an abundant number, since it is smaller than the sum of its proper divisors (121057608).

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

65563632 is a wasteful number, since it uses less digits than its factorization.

65563632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7790 (or 7781 counting only the distinct ones).

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

The square root of 65563632 is about 8097.1372719005. The cubic root of 65563632 is about 403.2313916413.

The spelling of 65563632 in words is "sixty-five million, five hundred sixty-three thousand, six hundred thirty-two".