63665412 has 12 divisors (see below), whose sum is σ = 148552656. Its totient is φ = 21221800.

The previous prime is 63665387. The next prime is 63665423. The reversal of 63665412 is 21456636.

63665412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

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, 2652714 + ... + 2652737.

It is an arithmetic number, because the mean of its divisors is an integer number (12379388).

Almost surely, 2^63665412 is an apocalyptic number.

It is an amenable number.

63665412 is an abundant number, since it is smaller than the sum of its proper divisors (84887244).

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

63665412 is a wasteful number, since it uses less digits than its factorization.

63665412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5305458 (or 5305456 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 63665412 is about 7979.0608469920. The cubic root of 63665412 is about 399.3017234005.

The spelling of 63665412 in words is "sixty-three million, six hundred sixty-five thousand, four hundred twelve".