63665312 has 24 divisors (see below), whose sum is σ = 125538336. Its totient is φ = 31782592.

The previous prime is 63665309. The next prime is 63665317. The reversal of 63665312 is 21356636.

63665312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (63665317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27263 + ... + 29505.

It is an arithmetic number, because the mean of its divisors is an integer number (5230764).

Almost surely, 2^63665312 is an apocalyptic number.

It is an amenable number.

63665312 is a deficient number, since it is larger than the sum of its proper divisors (61873024).

63665312 is a wasteful number, since it uses less digits than its factorization.

63665312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3140 (or 3132 counting only the distinct ones).

The product of its digits is 19440, while the sum is 32.

The square root of 63665312 is about 7979.0545805879. The cubic root of 63665312 is about 399.3015143377.

The spelling of 63665312 in words is "sixty-three million, six hundred sixty-five thousand, three hundred twelve".