63676868 has 12 divisors (see below), whose sum is σ = 111619452. Its totient is φ = 31785600.

The previous prime is 63676861. The next prime is 63676897. The reversal of 63676868 is 86867636.

63676868 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 2 ways, for example, as 14002564 + 49674304 = 3742^2 + 7048^2 .

It is not an unprimeable number, because it can be changed into a prime (63676861) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 10433 + ... + 15368.

It is an arithmetic number, because the mean of its divisors is an integer number (9301621).

Almost surely, 2^63676868 is an apocalyptic number.

It is an amenable number.

63676868 is a deficient number, since it is larger than the sum of its proper divisors (47942584).

63676868 is a wasteful number, since it uses less digits than its factorization.

63676868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26422 (or 26420 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 50.

The square root of 63676868 is about 7979.7786936732. The cubic root of 63676868 is about 399.3256721771.

The spelling of 63676868 in words is "sixty-three million, six hundred seventy-six thousand, eight hundred sixty-eight".