65500560 has 120 divisors (see below), whose sum is σ = 227630520. Its totient is φ = 16859136.

The previous prime is 65500537. The next prime is 65500577. The reversal of 65500560 is 6500556.

65500560 is a `hidden beast` number, since 655 + 0 + 0 + 5 + 6 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 27751824 + 37748736 = 5268^2 + 6144^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19312 + ... + 22448.

It is an arithmetic number, because the mean of its divisors is an integer number (1896921).

Almost surely, 2^65500560 is an apocalyptic number.

65500560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65500560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113815260).

65500560 is an abundant number, since it is smaller than the sum of its proper divisors (162129960).

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

65500560 is a wasteful number, since it uses less digits than its factorization.

65500560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3185 (or 3176 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 65500560 is about 8093.2416249609. The cubic root of 65500560 is about 403.1020477287.

The spelling of 65500560 in words is "sixty-five million, five hundred thousand, five hundred sixty".