66463312 has 20 divisors (see below), whose sum is σ = 129389536. Its totient is φ = 33072480.

The previous prime is 66463289. The next prime is 66463379. The reversal of 66463312 is 21336466.

66463312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 6468 + ... + 13219.

Almost surely, 2^66463312 is an apocalyptic number.

It is an amenable number.

66463312 is a deficient number, since it is larger than the sum of its proper divisors (62926224).

66463312 is a wasteful number, since it uses less digits than its factorization.

66463312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19906 (or 19900 counting only the distinct ones).

The product of its digits is 15552, while the sum is 31.

The square root of 66463312 is about 8152.5034191958. The cubic root of 66463312 is about 405.0674317432.

Adding to 66463312 its reverse (21336466), we get a palindrome (87799778).

The spelling of 66463312 in words is "sixty-six million, four hundred sixty-three thousand, three hundred twelve".