63981202 has 4 divisors (see below), whose sum is σ = 95971806. Its totient is φ = 31990600.

The previous prime is 63981199. The next prime is 63981233. The reversal of 63981202 is 20218936.

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

It can be written as a sum of positive squares in only one way, i.e., 61449921 + 2531281 = 7839^2 + 1591^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 as a sum of consecutive naturals, namely, 15995299 + ... + 15995302.

Almost surely, 2^63981202 is an apocalyptic number.

63981202 is a deficient number, since it is larger than the sum of its proper divisors (31990604).

63981202 is a wasteful number, since it uses less digits than its factorization.

63981202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31990603.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 63981202 is about 7998.8250387166. The cubic root of 63981202 is about 399.9608336651.

The spelling of 63981202 in words is "sixty-three million, nine hundred eighty-one thousand, two hundred two".