64565632 has 32 divisors (see below), whose sum is σ = 129009600. Its totient is φ = 32186880.

The previous prime is 64565621. The next prime is 64565659. The reversal of 64565632 is 23656546.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 64565591 and 64565600.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 64657 + ... + 65647.

It is an arithmetic number, because the mean of its divisors is an integer number (4031550).

Almost surely, 2^64565632 is an apocalyptic number.

It is an amenable number.

64565632 is a deficient number, since it is larger than the sum of its proper divisors (64443968).

64565632 is an equidigital number, since it uses as much as digits as its factorization.

64565632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514 (or 1502 counting only the distinct ones).

The product of its digits is 129600, while the sum is 37.

The square root of 64565632 is about 8035.2742330303. The cubic root of 64565632 is about 401.1749453792.

The spelling of 64565632 in words is "sixty-four million, five hundred sixty-five thousand, six hundred thirty-two".