64563120 has 60 divisors (see below), whose sum is σ = 216826896. Its totient is φ = 17216640.

The previous prime is 64563097. The next prime is 64563133. The reversal of 64563120 is 2136546.

64563120 is a `hidden beast` number, since 6 + 4 + 5 + 631 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

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, 44116 + ... + 45555.

Almost surely, 2^64563120 is an apocalyptic number.

64563120 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64563120 is an abundant number, since it is smaller than the sum of its proper divisors (152263776).

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

64563120 is a wasteful number, since it uses less digits than its factorization.

64563120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89690 (or 89681 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 64563120 is about 8035.1179207277. The cubic root of 64563120 is about 401.1697425879.

Adding to 64563120 its reverse (2136546), we get a palindrome (66699666).

The spelling of 64563120 in words is "sixty-four million, five hundred sixty-three thousand, one hundred twenty".