63331887 has 8 divisors (see below), whose sum is σ = 84755200. Its totient is φ = 42064920.

The previous prime is 63331871. The next prime is 63331897. The reversal of 63331887 is 78813336.

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

It is not a de Polignac number, because 63331887 - 2⁴ = 63331871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63331897) 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, 38137 + ... + 39762.

It is an arithmetic number, because the mean of its divisors is an integer number (10594400).

Almost surely, 2^63331887 is an apocalyptic number.

63331887 is a deficient number, since it is larger than the sum of its proper divisors (21423313).

63331887 is a wasteful number, since it uses less digits than its factorization.

63331887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78173.

The product of its digits is 72576, while the sum is 39.

The square root of 63331887 is about 7958.1333866680. The cubic root of 63331887 is about 398.6032261509.

The spelling of 63331887 in words is "sixty-three million, three hundred thirty-one thousand, eight hundred eighty-seven".