65524320 has 72 divisors (see below), whose sum is σ = 223606656. Its totient is φ = 17472768.

The previous prime is 65524241. The next prime is 65524343. The reversal of 65524320 is 2342556.

65524320 is a `hidden beast` number, since 655 + 2 + 4 + 3 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×65524320² = 8586873022924800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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, 21312 + ... + 24191.

It is an arithmetic number, because the mean of its divisors is an integer number (3105648).

Almost surely, 2^65524320 is an apocalyptic number.

65524320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65524320 is an abundant number, since it is smaller than the sum of its proper divisors (158082336).

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

65524320 is a wasteful number, since it uses less digits than its factorization.

65524320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45524 (or 45513 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 65524320 is about 8094.7093832947. The cubic root of 65524320 is about 403.1507829192.

Adding to 65524320 its reverse (2342556), we get a palindrome (67866876).

The spelling of 65524320 in words is "sixty-five million, five hundred twenty-four thousand, three hundred twenty".