63731996 has 6 divisors (see below), whose sum is σ = 111531000. Its totient is φ = 31865996.

The previous prime is 63731981. The next prime is 63732017. The reversal of 63731996 is 69913736.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7966496 + ... + 7966503.

It is an arithmetic number, because the mean of its divisors is an integer number (18588500).

Almost surely, 2^63731996 is an apocalyptic number.

It is an amenable number.

63731996 is a deficient number, since it is larger than the sum of its proper divisors (47799004).

63731996 is a wasteful number, since it uses less digits than its factorization.

63731996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15933003 (or 15933001 counting only the distinct ones).

The product of its digits is 183708, while the sum is 44.

The square root of 63731996 is about 7983.2321775081. The cubic root of 63731996 is about 399.4408771516.

The spelling of 63731996 in words is "sixty-three million, seven hundred thirty-one thousand, nine hundred ninety-six".