63988473 has 8 divisors (see below), whose sum is σ = 85360000. Its totient is φ = 42637968.

The previous prime is 63988469. The next prime is 63988489. The reversal of 63988473 is 37488936.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63988473 - 2² = 63988469 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63988403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4368 + ... + 12126.

It is an arithmetic number, because the mean of its divisors is an integer number (10670000).

Almost surely, 2^63988473 is an apocalyptic number.

It is an amenable number.

63988473 is a deficient number, since it is larger than the sum of its proper divisors (21371527).

63988473 is a wasteful number, since it uses less digits than its factorization.

63988473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10511.

The product of its digits is 870912, while the sum is 48.

The square root of 63988473 is about 7999.2795300577. The cubic root of 63988473 is about 399.9759839748.

The spelling of 63988473 in words is "sixty-three million, nine hundred eighty-eight thousand, four hundred seventy-three".