685739713 has 16 divisors (see below), whose sum is σ = 724838400. Its totient is φ = 647781120.

The previous prime is 685739711. The next prime is 685739723. The reversal of 685739713 is 317937586.

It is not a de Polignac number, because 685739713 - 2¹ = 685739711 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (685739711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 411520 + ... + 413182.

It is an arithmetic number, because the mean of its divisors is an integer number (45302400).

Almost surely, 2^685739713 is an apocalyptic number.

It is an amenable number.

685739713 is a deficient number, since it is larger than the sum of its proper divisors (39098687).

685739713 is a wasteful number, since it uses less digits than its factorization.

685739713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1992.

The product of its digits is 952560, while the sum is 49.

The square root of 685739713 is about 26186.6323340746. The cubic root of 685739713 is about 881.8331762340.

The spelling of 685739713 in words is "six hundred eighty-five million, seven hundred thirty-nine thousand, seven hundred thirteen".