9965864 has 16 divisors (see below), whose sum is σ = 18897300. Its totient is φ = 4926592.

The previous prime is 9965863. The next prime is 9965869. The reversal of 9965864 is 4685699.

It can be written as a sum of positive squares in 2 ways, for example, as 9672100 + 293764 = 3110^2 + 542^2 .

It is not an unprimeable number, because it can be changed into a prime (9965863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6287 + ... + 7710.

Almost surely, 2^9965864 is an apocalyptic number.

It is an amenable number.

9965864 is a deficient number, since it is larger than the sum of its proper divisors (8931436).

9965864 is a wasteful number, since it uses less digits than its factorization.

9965864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14092 (or 14088 counting only the distinct ones).

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

The square root of 9965864 is about 3156.8756706592. The cubic root of 9965864 is about 215.1980435877.

The spelling of 9965864 in words is "nine million, nine hundred sixty-five thousand, eight hundred sixty-four".