685307716 has 24 divisors (see below), whose sum is σ = 1213586136. Its totient is φ = 338580480.

The previous prime is 685307687. The next prime is 685307717. The reversal of 685307716 is 617703586.

685307716 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 152621316 + 532686400 = 12354^2 + 23080^2 .

It is not an unprimeable number, because it can be changed into a prime (685307717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 364170 + ... + 366046.

It is an arithmetic number, because the mean of its divisors is an integer number (50566089).

Almost surely, 2^685307716 is an apocalyptic number.

It is an amenable number.

685307716 is a deficient number, since it is larger than the sum of its proper divisors (528278420).

685307716 is a wasteful number, since it uses less digits than its factorization.

685307716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2919 (or 2917 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 685307716 is about 26178.3826085570. The cubic root of 685307716 is about 881.6479605206.

The spelling of 685307716 in words is "six hundred eighty-five million, three hundred seven thousand, seven hundred sixteen".