63987200 has 60 divisors (see below), whose sum is σ = 158565000. Its totient is φ = 25589760.

The previous prime is 63987199. The next prime is 63987221. The reversal of 63987200 is 278936.

It is a congruent number.

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, 10301 + ... + 15299.

It is an arithmetic number, because the mean of its divisors is an integer number (2642750).

Almost surely, 2^63987200 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 63987200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79282500).

63987200 is an abundant number, since it is smaller than the sum of its proper divisors (94577800).

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

63987200 is an equidigital number, since it uses as much as digits as its factorization.

63987200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5027 (or 5006 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 63987200 is about 7999.1999599960. The cubic root of 63987200 is about 399.9733315554.

The spelling of 63987200 in words is "sixty-three million, nine hundred eighty-seven thousand, two hundred".