9840664 has 16 divisors (see below), whose sum is σ = 18488520. Its totient is φ = 4910400.

The previous prime is 9840661. The next prime is 9840667. The reversal of 9840664 is 4660489.

It is an interprime number because it is at equal distance from previous prime (9840661) and next prime (9840667).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9840661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4564 + ... + 6364.

Almost surely, 2^9840664 is an apocalyptic number.

It is an amenable number.

9840664 is a deficient number, since it is larger than the sum of its proper divisors (8647856).

9840664 is a wasteful number, since it uses less digits than its factorization.

9840664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2490 (or 2486 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 9840664 is about 3136.9832642206. The cubic root of 9840664 is about 214.2930738636.

The spelling of 9840664 in words is "nine million, eight hundred forty thousand, six hundred sixty-four".