686783713 has 32 divisors (see below), whose sum is σ = 889032960. Its totient is φ = 514805760.

The previous prime is 686783683. The next prime is 686783717. The reversal of 686783713 is 317387686.

It is a de Polignac number, because none of the positive numbers 2^k-686783713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (686783717) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1020145 + ... + 1020817.

It is an arithmetic number, because the mean of its divisors is an integer number (27782280).

Almost surely, 2^686783713 is an apocalyptic number.

It is an amenable number.

686783713 is a deficient number, since it is larger than the sum of its proper divisors (202249247).

686783713 is a wasteful number, since it uses less digits than its factorization.

686783713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177.

The product of its digits is 1016064, while the sum is 49.

The square root of 686783713 is about 26206.5585874987. The cubic root of 686783713 is about 882.2804630636.

The spelling of 686783713 in words is "six hundred eighty-six million, seven hundred eighty-three thousand, seven hundred thirteen".