65324560 has 80 divisors (see below), whose sum is σ = 174917376. Its totient is φ = 22224384.

The previous prime is 65324549. The next prime is 65324593. The reversal of 65324560 is 6542356.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87549 + ... + 88291.

Almost surely, 2^65324560 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 65324560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87458688).

65324560 is an abundant number, since it is smaller than the sum of its proper divisors (109592816).

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

65324560 is a wasteful number, since it uses less digits than its factorization.

65324560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920 (or 914 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 65324560 is about 8082.3610411810. The cubic root of 65324560 is about 402.7406788114.

The spelling of 65324560 in words is "sixty-five million, three hundred twenty-four thousand, five hundred sixty".