63998014 has 4 divisors (see below), whose sum is σ = 95997024. Its totient is φ = 31999006.

The previous prime is 63998009. The next prime is 63998027. The reversal of 63998014 is 41089936.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×63998014³ (a number of 24 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 15999502 + ... + 15999505.

It is an arithmetic number, because the mean of its divisors is an integer number (23999256).

Almost surely, 2^63998014 is an apocalyptic number.

63998014 is a deficient number, since it is larger than the sum of its proper divisors (31999010).

63998014 is a wasteful number, since it uses less digits than its factorization.

63998014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31999009.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 63998014 is about 7999.8758740370. The cubic root of 63998014 is about 399.9958624572.

The spelling of 63998014 in words is "sixty-three million, nine hundred ninety-eight thousand, fourteen".