9663605 has 16 divisors (see below), whose sum is σ = 13563264. Its totient is φ = 6471360.

The previous prime is 9663587. The next prime is 9663629. The reversal of 9663605 is 5063669.

It is not a de Polignac number, because 9663605 - 2⁸ = 9663349 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1706 + ... + 4715.

It is an arithmetic number, because the mean of its divisors is an integer number (847704).

Almost surely, 2^9663605 is an apocalyptic number.

It is an amenable number.

9663605 is a deficient number, since it is larger than the sum of its proper divisors (3899659).

9663605 is a wasteful number, since it uses less digits than its factorization.

9663605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6476.

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 9663605 is about 3108.6339443556. The cubic root of 9663605 is about 213.0000587773. Note that the first 4 decimals are identical.

The spelling of 9663605 in words is "nine million, six hundred sixty-three thousand, six hundred five".