9649663 has 16 divisors (see below), whose sum is σ = 10684800. Its totient is φ = 8678880.

The previous prime is 9649639. The next prime is 9649667. The reversal of 9649663 is 3669469.

9649663 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 9649663 - 2²¹ = 7552511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9649667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45628 + ... + 45838.

It is an arithmetic number, because the mean of its divisors is an integer number (667800).

Almost surely, 2^9649663 is an apocalyptic number.

9649663 is a deficient number, since it is larger than the sum of its proper divisors (1035137).

9649663 is a wasteful number, since it uses less digits than its factorization.

9649663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342.

The product of its digits is 209952, while the sum is 43.

The square root of 9649663 is about 3106.3906708590. The cubic root of 9649663 is about 212.8975754183.

The spelling of 9649663 in words is "nine million, six hundred forty-nine thousand, six hundred sixty-three".