63218412 has 36 divisors (see below), whose sum is σ = 160043520. Its totient is φ = 21040992.

The previous prime is 63218411. The next prime is 63218447. The reversal of 63218412 is 21481236.

63218412 is a `hidden beast` number, since 632 + 18 + 4 + 12 = 666.

63218412 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 (36).

It is not an unprimeable number, because it can be changed into a prime (63218411) 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 11 ways as a sum of consecutive naturals, for example, 45358 + ... + 46730.

Almost surely, 2^63218412 is an apocalyptic number.

It is an amenable number.

63218412 is an abundant number, since it is smaller than the sum of its proper divisors (96825108).

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

63218412 is a wasteful number, since it uses less digits than its factorization.

63218412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2662 (or 2657 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 63218412 is about 7951.0006917369. Note that the first 3 decimals coincide. The cubic root of 63218412 is about 398.3650178555.

Adding to 63218412 its reverse (21481236), we get a palindrome (84699648).

It can be divided in two parts, 632 and 18412, that added together give a square (19044 = 138²).

The spelling of 63218412 in words is "sixty-three million, two hundred eighteen thousand, four hundred twelve".