63631168 has 14 divisors (see below), whose sum is σ = 126268226. Its totient is φ = 31815552.

The previous prime is 63631163. The next prime is 63631177. The reversal of 63631168 is 86113636.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 57638464 + 5992704 = 7592^2 + 2448^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63631163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497055 + ... + 497182.

It is an arithmetic number, because the mean of its divisors is an integer number (9019159).

Almost surely, 2^63631168 is an apocalyptic number.

It is an amenable number.

63631168 is a deficient number, since it is larger than the sum of its proper divisors (62637058).

63631168 is an equidigital number, since it uses as much as digits as its factorization.

63631168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994249 (or 994239 counting only the distinct ones).

The product of its digits is 15552, while the sum is 34.

The square root of 63631168 is about 7976.9146917840. The cubic root of 63631168 is about 399.2301191594.

The spelling of 63631168 in words is "sixty-three million, six hundred thirty-one thousand, one hundred sixty-eight".