685682693 has 8 divisors (see below), whose sum is σ = 716439168. Its totient is φ = 655004944.

The previous prime is 685682663. The next prime is 685682741. The reversal of 685682693 is 396286586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 685682693 - 2⁶ = 685682629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685682603) 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 7 ways as a sum of consecutive naturals, for example, 1505 + ... + 37062.

It is an arithmetic number, because the mean of its divisors is an integer number (89554896).

Almost surely, 2^685682693 is an apocalyptic number.

It is an amenable number.

685682693 is a deficient number, since it is larger than the sum of its proper divisors (30756475).

685682693 is a wasteful number, since it uses less digits than its factorization.

685682693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39363.

The product of its digits is 3732480, while the sum is 53.

The square root of 685682693 is about 26185.5435880182. The cubic root of 685682693 is about 881.8087337619.

The spelling of 685682693 in words is "six hundred eighty-five million, six hundred eighty-two thousand, six hundred ninety-three".