63998698 has 8 divisors (see below), whose sum is σ = 96252480. Its totient is φ = 31914540.

The previous prime is 63998689. The next prime is 63998713. The reversal of 63998698 is 89689936.

63998698 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41458 + ... + 42973.

It is an arithmetic number, because the mean of its divisors is an integer number (12031560).

Almost surely, 2^63998698 is an apocalyptic number.

63998698 is a deficient number, since it is larger than the sum of its proper divisors (32253782).

63998698 is a wasteful number, since it uses less digits than its factorization.

63998698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84812.

The product of its digits is 5038848, while the sum is 58.

The square root of 63998698 is about 7999.9186245861. The cubic root of 63998698 is about 399.9972874816.

The spelling of 63998698 in words is "sixty-three million, nine hundred ninety-eight thousand, six hundred ninety-eight".