63730218 has 24 divisors (see below), whose sum is σ = 134526528. Its totient is φ = 20124648.

The previous prime is 63730213. The next prime is 63730273. The reversal of 63730218 is 81203736.

63730218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (63730213) 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, 12546 + ... + 16877.

It is an arithmetic number, because the mean of its divisors is an integer number (5605272).

Almost surely, 2^63730218 is an apocalyptic number.

63730218 is an abundant number, since it is smaller than the sum of its proper divisors (70796310).

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

63730218 is a wasteful number, since it uses less digits than its factorization.

63730218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29466 (or 29447 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 63730218 is about 7983.1208183266. The cubic root of 63730218 is about 399.4371625732.

The spelling of 63730218 in words is "sixty-three million, seven hundred thirty thousand, two hundred eighteen".