63557868 has 48 divisors (see below), whose sum is σ = 164545920. Its totient is φ = 18931200.

The previous prime is 63557801. The next prime is 63557873. The reversal of 63557868 is 86875536.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3708 + ... + 11868.

It is an arithmetic number, because the mean of its divisors is an integer number (3428040).

Almost surely, 2^63557868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63557868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82272960).

63557868 is an abundant number, since it is smaller than the sum of its proper divisors (100988052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63557868 is a wasteful number, since it uses less digits than its factorization.

63557868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8238 (or 8236 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 48.

The square root of 63557868 is about 7972.3188596543. The cubic root of 63557868 is about 399.0767623869.

The spelling of 63557868 in words is "sixty-three million, five hundred fifty-seven thousand, eight hundred sixty-eight".