9713785 has 4 divisors (see below), whose sum is σ = 11656548. Its totient is φ = 7771024.

The previous prime is 9713773. The next prime is 9713789. The reversal of 9713785 is 5873179.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5873179 = 13 ⋅451783.

It can be written as a sum of positive squares in 2 ways, for example, as 4016016 + 5697769 = 2004^2 + 2387^2 .

It is a cyclic number.

It is not a de Polignac number, because 9713785 - 2¹⁵ = 9681017 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9713789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 971374 + ... + 971383.

It is an arithmetic number, because the mean of its divisors is an integer number (2914137).

Almost surely, 2^9713785 is an apocalyptic number.

It is an amenable number.

9713785 is a deficient number, since it is larger than the sum of its proper divisors (1942763).

9713785 is a wasteful number, since it uses less digits than its factorization.

9713785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1942762.

The product of its digits is 52920, while the sum is 40.

The square root of 9713785 is about 3116.6945631550. The cubic root of 9713785 is about 213.3681027856.

Subtracting from 9713785 its reverse (5873179), we obtain a triangular number (3840606 = T₂₇₇₁).

The spelling of 9713785 in words is "nine million, seven hundred thirteen thousand, seven hundred eighty-five".