685848717 has 12 divisors (see below), whose sum is σ = 991070080. Its totient is φ = 457048008.

The previous prime is 685848701. The next prime is 685848727. The reversal of 685848717 is 717848586.

It is a happy number.

It is not a de Polignac number, because 685848717 - 2⁴ = 685848701 is a prime.

It is a super-2 number, since 2×685848717² = 940776925221092178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685848727) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 10458 + ... + 38484.

Almost surely, 2^685848717 is an apocalyptic number.

It is an amenable number.

685848717 is a deficient number, since it is larger than the sum of its proper divisors (305221363).

685848717 is a wasteful number, since it uses less digits than its factorization.

685848717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30752 (or 30749 counting only the distinct ones).

The product of its digits is 3010560, while the sum is 54.

The square root of 685848717 is about 26188.7135422876. The cubic root of 685848717 is about 881.8798986512.

The spelling of 685848717 in words is "six hundred eighty-five million, eight hundred forty-eight thousand, seven hundred seventeen".