9638785 has 16 divisors (see below), whose sum is σ = 12526416. Its totient is φ = 7077888.

The previous prime is 9638773. The next prime is 9638801. The reversal of 9638785 is 5878369.

It can be written as a sum of positive squares in 8 ways, for example, as 1567504 + 8071281 = 1252^2 + 2841^2 .

It is a 3-Lehmer number, since φ(9638785) divides (9638785-1)³.

It is a cyclic number.

It is not a de Polignac number, because 9638785 - 2⁵ = 9638753 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16417 + ... + 16993.

It is an arithmetic number, because the mean of its divisors is an integer number (782901).

It is a Poulet number, since it divides 2^9638784-1.

Almost surely, 2^9638785 is an apocalyptic number.

It is an amenable number.

9638785 is a deficient number, since it is larger than the sum of its proper divisors (2887631).

9638785 is a wasteful number, since it uses less digits than its factorization.

9638785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852.

The product of its digits is 362880, while the sum is 46.

The square root of 9638785 is about 3104.6392705111. The cubic root of 9638785 is about 212.8175460050.

The spelling of 9638785 in words is "nine million, six hundred thirty-eight thousand, seven hundred eighty-five".