9631665 has 24 divisors (see below), whose sum is σ = 16796520. Its totient is φ = 5105664.

The previous prime is 9631649. The next prime is 9631667. The reversal of 9631665 is 5661369.

It can be written as a sum of positive squares in 4 ways, for example, as 194481 + 9437184 = 441^2 + 3072^2 .

It is not a de Polignac number, because 9631665 - 2⁴ = 9631649 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9631667) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8131 + ... + 9239.

It is an arithmetic number, because the mean of its divisors is an integer number (699855).

Almost surely, 2^9631665 is an apocalyptic number.

It is an amenable number.

9631665 is a deficient number, since it is larger than the sum of its proper divisors (7164855).

9631665 is a wasteful number, since it uses less digits than its factorization.

9631665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313 (or 1310 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 9631665 is about 3103.4923876175. The cubic root of 9631665 is about 212.7651315780.

It can be divided in two parts, 9631 and 665, that added together give a triangular number (10296 = T₁₄₃).

The spelling of 9631665 in words is "nine million, six hundred thirty-one thousand, six hundred sixty-five".