8663631 has 8 divisors (see below), whose sum is σ = 11566464. Its totient is φ = 5768280.

The previous prime is 8663621. The next prime is 8663653. The reversal of 8663631 is 1363668.

8663631 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 8663631 - 2⁷ = 8663503 is a prime.

It is a super-2 number, since 2×8663631² = 150117004208322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 8663592 and 8663601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8663621) 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, 1950 + ... + 4596.

It is an arithmetic number, because the mean of its divisors is an integer number (1445808).

Almost surely, 2^8663631 is an apocalyptic number.

8663631 is a deficient number, since it is larger than the sum of its proper divisors (2902833).

8663631 is a wasteful number, since it uses less digits than its factorization.

8663631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3741.

The product of its digits is 15552, while the sum is 33.

The square root of 8663631 is about 2943.4046612724. The cubic root of 8663631 is about 205.3840194230.

The spelling of 8663631 in words is "eight million, six hundred sixty-three thousand, six hundred thirty-one".