63868312 has 8 divisors (see below), whose sum is σ = 119753100. Its totient is φ = 31934152.

The previous prime is 63868307. The next prime is 63868331. The reversal of 63868312 is 21386836.

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

It is a super-2 number, since 2×63868312² = 8158322555458688, which contains 22 as substring.

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, 3991762 + ... + 3991777.

Almost surely, 2^63868312 is an apocalyptic number.

It is an amenable number.

63868312 is a deficient number, since it is larger than the sum of its proper divisors (55884788).

63868312 is a wasteful number, since it uses less digits than its factorization.

63868312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7983545 (or 7983541 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 63868312 is about 7991.7652618179. The cubic root of 63868312 is about 399.7254616148.

The spelling of 63868312 in words is "sixty-three million, eight hundred sixty-eight thousand, three hundred twelve".