63895816 has 24 divisors (see below), whose sum is σ = 124091370. Its totient is φ = 30843008.

The previous prime is 63895759. The next prime is 63895829. The reversal of 63895816 is 61859836.

It can be written as a sum of positive squares in 3 ways, for example, as 40373316 + 23522500 = 6354^2 + 4850^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1980 + ... + 11476.

Almost surely, 2^63895816 is an apocalyptic number.

It is an amenable number.

63895816 is a deficient number, since it is larger than the sum of its proper divisors (60195554).

63895816 is a wasteful number, since it uses less digits than its factorization.

63895816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9561 (or 9528 counting only the distinct ones).

The product of its digits is 311040, while the sum is 46.

The square root of 63895816 is about 7993.4858478639. The cubic root of 63895816 is about 399.7828321166.

The spelling of 63895816 in words is "sixty-three million, eight hundred ninety-five thousand, eight hundred sixteen".