9660631 has 4 divisors (see below), whose sum is σ = 9819064. Its totient is φ = 9502200.

The previous prime is 9660617. The next prime is 9660643. The reversal of 9660631 is 1360669.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1360669 = 53 ⋅25673.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9660631 is a prime.

It is a super-2 number, since 2×9660631² = 186655582636322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9660593 and 9660602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9660611) 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, 79125 + ... + 79246.

It is an arithmetic number, because the mean of its divisors is an integer number (2454766).

Almost surely, 2^9660631 is an apocalyptic number.

9660631 is a deficient number, since it is larger than the sum of its proper divisors (158433).

9660631 is a wasteful number, since it uses less digits than its factorization.

9660631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158432.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 9660631 is about 3108.1555623874. The cubic root of 9660631 is about 212.9782060915.

The spelling of 9660631 in words is "nine million, six hundred sixty thousand, six hundred thirty-one".