9965648 has 40 divisors (see below), whose sum is σ = 24075840. Its totient is φ = 3882240.

The previous prime is 9965611. The next prime is 9965651. The reversal of 9965648 is 8465699.

It is a super-3 number, since 3×9965648³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2813 + ... + 5276.

It is an arithmetic number, because the mean of its divisors is an integer number (601896).

Almost surely, 2^9965648 is an apocalyptic number.

It is an amenable number.

9965648 is an abundant number, since it is smaller than the sum of its proper divisors (14110192).

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

9965648 is a wasteful number, since it uses less digits than its factorization.

9965648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8115 (or 8109 counting only the distinct ones).

The product of its digits is 466560, while the sum is 47.

The square root of 9965648 is about 3156.8414594338. The cubic root of 9965648 is about 215.1964888433.

The spelling of 9965648 in words is "nine million, nine hundred sixty-five thousand, six hundred forty-eight".