9781696485 has 72 divisors (see below), whose sum is σ = 19207427616. Its totient is φ = 4742465760.

The previous prime is 9781696411. The next prime is 9781696493. The reversal of 9781696485 is 5846961879.

9781696485 is a `hidden beast` number, since 97 + 8 + 1 + 69 + 6 + 485 = 666.

9781696485 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9781696485 - 2⁸ = 9781696229 is a prime.

It is a super-2 number, since 2×9781696485² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 347302 + ... + 374408.

It is an arithmetic number, because the mean of its divisors is an integer number (266769828).

Almost surely, 2^9781696485 is an apocalyptic number.

It is an amenable number.

9781696485 is a deficient number, since it is larger than the sum of its proper divisors (9425731131).

9781696485 is an equidigital number, since it uses as much as digits as its factorization.

9781696485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27147 (or 27126 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 63.

The square root of 9781696485 is about 98902.4594486912. The cubic root of 9781696485 is about 2138.6418497505.

It can be divided in two parts, 9781 and 696485, that added together give a triangular number (706266 = T₁₁₈₈).

The spelling of 9781696485 in words is "nine billion, seven hundred eighty-one million, six hundred ninety-six thousand, four hundred eighty-five".