9881663 has 8 divisors (see below), whose sum is σ = 11152080. Its totient is φ = 8673280.

The previous prime is 9881647. The next prime is 9881671. The reversal of 9881663 is 3661889.

It is a happy number.

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

It is not a de Polignac number, because 9881663 - 2⁴ = 9881647 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9881663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9881603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15170 + ... + 15807.

It is an arithmetic number, because the mean of its divisors is an integer number (1394010).

Almost surely, 2^9881663 is an apocalyptic number.

9881663 is a deficient number, since it is larger than the sum of its proper divisors (1270417).

9881663 is a wasteful number, since it uses less digits than its factorization.

9881663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31017.

The product of its digits is 62208, while the sum is 41.

The square root of 9881663 is about 3143.5112533598. The cubic root of 9881663 is about 214.5902634475.

The spelling of 9881663 in words is "nine million, eight hundred eighty-one thousand, six hundred sixty-three".