63887478 has 16 divisors (see below), whose sum is σ = 128214576. Its totient is φ = 21222560.

The previous prime is 63887441. The next prime is 63887489. The reversal of 63887478 is 87478836.

It is a self number, because there is not a number n which added to its sum of digits gives 63887478.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16413 + ... + 19928.

It is an arithmetic number, because the mean of its divisors is an integer number (8013411).

Almost surely, 2^63887478 is an apocalyptic number.

63887478 is an abundant number, since it is smaller than the sum of its proper divisors (64327098).

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

63887478 is a wasteful number, since it uses less digits than its factorization.

63887478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36639.

The product of its digits is 1806336, while the sum is 51.

The square root of 63887478 is about 7992.9642811663. The cubic root of 63887478 is about 399.7654416495.

The spelling of 63887478 in words is "sixty-three million, eight hundred eighty-seven thousand, four hundred seventy-eight".