63731144 has 8 divisors (see below), whose sum is σ = 119495910. Its totient is φ = 31865568.

The previous prime is 63731141. The next prime is 63731191. The reversal of 63731144 is 44113736.

It can be written as a sum of positive squares in only one way, i.e., 37332100 + 26399044 = 6110^2 + 5138^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (63731141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3983189 + ... + 3983204.

Almost surely, 2^63731144 is an apocalyptic number.

It is an amenable number.

63731144 is a deficient number, since it is larger than the sum of its proper divisors (55764766).

63731144 is a wasteful number, since it uses less digits than its factorization.

63731144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7966399 (or 7966395 counting only the distinct ones).

The product of its digits is 6048, while the sum is 29.

The square root of 63731144 is about 7983.1788154845. The cubic root of 63731144 is about 399.4390971710.

The spelling of 63731144 in words is "sixty-three million, seven hundred thirty-one thousand, one hundred forty-four".