63643016 has 8 divisors (see below), whose sum is σ = 119330670. Its totient is φ = 31821504.

The previous prime is 63643007. The next prime is 63643033. The reversal of 63643016 is 61034636.

63643016 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 63138916 + 504100 = 7946^2 + 710^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 63643016.

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 as a sum of consecutive naturals, namely, 3977681 + ... + 3977696.

Almost surely, 2^63643016 is an apocalyptic number.

It is an amenable number.

63643016 is a deficient number, since it is larger than the sum of its proper divisors (55687654).

63643016 is a wasteful number, since it uses less digits than its factorization.

63643016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7955383 (or 7955379 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 63643016 is about 7977.6573002355. The cubic root of 63643016 is about 399.2548962461.

The spelling of 63643016 in words is "sixty-three million, six hundred forty-three thousand, sixteen".