686595713 has 4 divisors (see below), whose sum is σ = 686805168. Its totient is φ = 686386260.

The previous prime is 686595709. The next prime is 686595731. The reversal of 686595713 is 317595686.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 317595686 = 2 ⋅158797843.

It is a cyclic number.

It is not a de Polignac number, because 686595713 - 2² = 686595709 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (686595743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99731 + ... + 106392.

It is an arithmetic number, because the mean of its divisors is an integer number (171701292).

Almost surely, 2^686595713 is an apocalyptic number.

It is an amenable number.

686595713 is a deficient number, since it is larger than the sum of its proper divisors (209455).

686595713 is a wasteful number, since it uses less digits than its factorization.

686595713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209454.

The product of its digits is 1360800, while the sum is 50.

The square root of 686595713 is about 26202.9714536348. The cubic root of 686595713 is about 882.1999506397.

The spelling of 686595713 in words is "six hundred eighty-six million, five hundred ninety-five thousand, seven hundred thirteen".