63998016 has 28 divisors (see below), whose sum is σ = 169328592. Its totient is φ = 21332608.

The previous prime is 63998009. The next prime is 63998027. The reversal of 63998016 is 61089936.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166470 + ... + 166853.

Almost surely, 2^63998016 is an apocalyptic number.

It is an amenable number.

63998016 is an abundant number, since it is smaller than the sum of its proper divisors (105330576).

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

63998016 is a wasteful number, since it uses less digits than its factorization.

63998016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333338 (or 333328 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 63998016 is about 7999.8759990390. The cubic root of 63998016 is about 399.9958666240.

The spelling of 63998016 in words is "sixty-three million, nine hundred ninety-eight thousand, sixteen".