63711138 has 32 divisors (see below), whose sum is σ = 139276800. Its totient is φ = 19342080.

The previous prime is 63711133. The next prime is 63711181. The reversal of 63711138 is 83111736.

63711138 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 (63711133) 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 15 ways as a sum of consecutive naturals, for example, 6913 + ... + 13236.

It is an arithmetic number, because the mean of its divisors is an integer number (4352400).

Almost surely, 2^63711138 is an apocalyptic number.

63711138 is an abundant number, since it is smaller than the sum of its proper divisors (75565662).

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

63711138 is a wasteful number, since it uses less digits than its factorization.

63711138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20202.

The product of its digits is 3024, while the sum is 30.

The square root of 63711138 is about 7981.9257074969. The cubic root of 63711138 is about 399.3972964940.

The spelling of 63711138 in words is "sixty-three million, seven hundred eleven thousand, one hundred thirty-eight".