63998035 has 4 divisors (see below), whose sum is σ = 76797648. Its totient is φ = 51198424.

The previous prime is 63998027. The next prime is 63998069. The reversal of 63998035 is 53089936.

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

It is a cyclic number.

It is not a de Polignac number, because 63998035 - 2³ = 63998027 is a prime.

It is a super-2 number, since 2×63998035² = 8191496967722450, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63997982 and 63998000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6399799 + ... + 6399808.

It is an arithmetic number, because the mean of its divisors is an integer number (19199412).

Almost surely, 2^63998035 is an apocalyptic number.

63998035 is a deficient number, since it is larger than the sum of its proper divisors (12799613).

63998035 is a wasteful number, since it uses less digits than its factorization.

63998035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12799612.

The product of its (nonzero) digits is 174960, while the sum is 43.

The square root of 63998035 is about 7999.8771865573. The cubic root of 63998035 is about 399.9959062081.

The spelling of 63998035 in words is "sixty-three million, nine hundred ninety-eight thousand, thirty-five".