63984002 has 4 divisors (see below), whose sum is σ = 95976006. Its totient is φ = 31992000.

The previous prime is 63983951. The next prime is 63984007. The reversal of 63984002 is 20048936.

It is a Cunningham number, because it is equal to 7999²+1.

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., 63984001 + 1 = 7999^2 + 1^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 63984002.

It is not an unprimeable number, because it can be changed into a prime (63984007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15995999 + ... + 15996002.

Almost surely, 2^63984002 is an apocalyptic number.

63984002 is a deficient number, since it is larger than the sum of its proper divisors (31992004).

63984002 is a wasteful number, since it uses less digits than its factorization.

63984002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31992003.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 63984002 is about 7999.0000625078. Note that the first 4 decimals coincide. The cubic root of 63984002 is about 399.9666680559.

The spelling of 63984002 in words is "sixty-three million, nine hundred eighty-four thousand, two".