63881875 has 20 divisors (see below), whose sum is σ = 81717592. Its totient is φ = 49896000.

The previous prime is 63881827. The next prime is 63881891. The reversal of 63881875 is 57818836.

It is not a de Polignac number, because 63881875 - 2¹³ = 63873683 is a prime.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 25687 + ... + 28063.

Almost surely, 2^63881875 is an apocalyptic number.

63881875 is a deficient number, since it is larger than the sum of its proper divisors (17835717).

63881875 is an equidigital number, since it uses as much as digits as its factorization.

63881875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2440 (or 2425 counting only the distinct ones).

The product of its digits is 322560, while the sum is 46.

The square root of 63881875 is about 7992.6137777325. The cubic root of 63881875 is about 399.7537546892.

The spelling of 63881875 in words is "sixty-three million, eight hundred eighty-one thousand, eight hundred seventy-five".