63816002 has 4 divisors (see below), whose sum is σ = 95724006. Its totient is φ = 31908000.

The previous prime is 63816001. The next prime is 63816013. The reversal of 63816002 is 20061836.

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., 45144961 + 18671041 = 6719^2 + 4321^2 .

It is a super-4 number, since 4×63816002⁴ (a number of 32 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (63816001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15953999 + ... + 15954002.

Almost surely, 2^63816002 is an apocalyptic number.

63816002 is a deficient number, since it is larger than the sum of its proper divisors (31908004).

63816002 is a wasteful number, since it uses less digits than its factorization.

63816002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31908003.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 63816002 is about 7988.4918476518. The cubic root of 63816002 is about 399.6163028923.

Adding to 63816002 its reverse (20061836), we get a palindrome (83877838).

The spelling of 63816002 in words is "sixty-three million, eight hundred sixteen thousand, two".