9665964 has 108 divisors (see below), whose sum is σ = 30790032. Its totient is φ = 2502720.

The previous prime is 9665959. The next prime is 9665969. The reversal of 9665964 is 4695669.

It is an interprime number because it is at equal distance from previous prime (9665959) and next prime (9665969).

It is not an unprimeable number, because it can be changed into a prime (9665969) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 30334 + ... + 30650.

Almost surely, 2^9665964 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9665964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15395016).

9665964 is an abundant number, since it is smaller than the sum of its proper divisors (21124068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9665964 is a wasteful number, since it uses less digits than its factorization.

9665964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356 (or 340 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 9665964 is about 3109.0133483149. The cubic root of 9665964 is about 213.0173893097.

The spelling of 9665964 in words is "nine million, six hundred sixty-five thousand, nine hundred sixty-four".