63681112 has 64 divisors (see below), whose sum is σ = 138101760. Its totient is φ = 27244800.

The previous prime is 63681109. The next prime is 63681131. The reversal of 63681112 is 21118636.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147537 + ... + 147967.

It is an arithmetic number, because the mean of its divisors is an integer number (2157840).

Almost surely, 2^63681112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63681112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69050880).

63681112 is an abundant number, since it is smaller than the sum of its proper divisors (74420648).

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

63681112 is a wasteful number, since it uses less digits than its factorization.

63681112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544 (or 540 counting only the distinct ones).

The product of its digits is 1728, while the sum is 28.

The square root of 63681112 is about 7980.0446114041. The cubic root of 63681112 is about 399.3345435332.

Adding to 63681112 its reverse (21118636), we get a palindrome (84799748).

The spelling of 63681112 in words is "sixty-three million, six hundred eighty-one thousand, one hundred twelve".