9687631 has 4 divisors (see below), whose sum is σ = 9711064. Its totient is φ = 9664200.

The previous prime is 9687589. The next prime is 9687641. The reversal of 9687631 is 1367869.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9687631 - 2¹¹ = 9685583 is a prime.

It is a super-2 number, since 2×9687631² = 187700388784322, 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 (9687641) 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 3 ways as a sum of consecutive naturals, for example, 11085 + ... + 11926.

It is an arithmetic number, because the mean of its divisors is an integer number (2427766).

Almost surely, 2^9687631 is an apocalyptic number.

9687631 is a deficient number, since it is larger than the sum of its proper divisors (23433).

9687631 is a wasteful number, since it uses less digits than its factorization.

9687631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23432.

The product of its digits is 54432, while the sum is 40.

The square root of 9687631 is about 3112.4959437725. The cubic root of 9687631 is about 213.1764354719.

The spelling of 9687631 in words is "nine million, six hundred eighty-seven thousand, six hundred thirty-one".