9963631 has 4 divisors (see below), whose sum is σ = 10011064. Its totient is φ = 9916200.

The previous prime is 9963587. The next prime is 9963641. The reversal of 9963631 is 1363699.

9963631 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1363699 = 109 ⋅12511.

It is a cyclic number.

It is not a de Polignac number, because 9963631 - 2¹¹ = 9961583 is a prime.

It is a super-2 number, since 2×9963631² = 198547885408322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9963641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23400 + ... + 23821.

It is an arithmetic number, because the mean of its divisors is an integer number (2502766).

Almost surely, 2^9963631 is an apocalyptic number.

9963631 is a deficient number, since it is larger than the sum of its proper divisors (47433).

9963631 is a wasteful number, since it uses less digits than its factorization.

9963631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47432.

The product of its digits is 26244, while the sum is 37.

The square root of 9963631 is about 3156.5219783806. The cubic root of 9963631 is about 215.1819696133.

The spelling of 9963631 in words is "nine million, nine hundred sixty-three thousand, six hundred thirty-one".