63731016 has 128 divisors (see below), whose sum is σ = 190512000. Its totient is φ = 19678464.

The previous prime is 63730993. The next prime is 63731021. The reversal of 63731016 is 61013736.

63731016 is a `hidden beast` number, since 637 + 3 + 10 + 16 = 666.

63731016 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 31 ways as a sum of consecutive naturals, for example, 217366 + ... + 217658.

It is an arithmetic number, because the mean of its divisors is an integer number (1488375).

Almost surely, 2^63731016 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 63731016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95256000).

63731016 is an abundant number, since it is smaller than the sum of its proper divisors (126780984).

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

63731016 is a wasteful number, since it uses less digits than its factorization.

63731016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380 (or 370 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 63731016 is about 7983.1707986238. The cubic root of 63731016 is about 399.4388297547.

The spelling of 63731016 in words is "sixty-three million, seven hundred thirty-one thousand, sixteen".