63988476 has 24 divisors (see below), whose sum is σ = 158089680. Its totient is φ = 20074752.

The previous prime is 63988469. The next prime is 63988489. The reversal of 63988476 is 67488936.

It is a Harshad number since it is a multiple of its sum of digits (51).

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, 156631 + ... + 157038.

It is an arithmetic number, because the mean of its divisors is an integer number (6587070).

Almost surely, 2^63988476 is an apocalyptic number.

It is an amenable number.

63988476 is an abundant number, since it is smaller than the sum of its proper divisors (94101204).

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

63988476 is a wasteful number, since it uses less digits than its factorization.

63988476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313693 (or 313691 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 51.

The square root of 63988476 is about 7999.2797175746. The cubic root of 63988476 is about 399.9759902255.

The spelling of 63988476 in words is "sixty-three million, nine hundred eighty-eight thousand, four hundred seventy-six".