63867868 has 6 divisors (see below), whose sum is σ = 111768776. Its totient is φ = 31933932.

The previous prime is 63867833. The next prime is 63867887. The reversal of 63867868 is 86876836.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7983480 + ... + 7983487.

Almost surely, 2^63867868 is an apocalyptic number.

It is an amenable number.

63867868 is a deficient number, since it is larger than the sum of its proper divisors (47900908).

63867868 is a wasteful number, since it uses less digits than its factorization.

63867868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15966971 (or 15966969 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 52.

The square root of 63867868 is about 7991.7374831760. The cubic root of 63867868 is about 399.7245353416.

The spelling of 63867868 in words is "sixty-three million, eight hundred sixty-seven thousand, eight hundred sixty-eight".