686743707 has 8 divisors (see below), whose sum is σ = 986093584. Its totient is φ = 422611488.

The previous prime is 686743697. The next prime is 686743711. The reversal of 686743707 is 707347686.

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

It is not a de Polignac number, because 686743707 - 2⁴ = 686743691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (686743787) 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, 8804368 + ... + 8804445.

It is an arithmetic number, because the mean of its divisors is an integer number (123261698).

Almost surely, 2^686743707 is an apocalyptic number.

686743707 is a deficient number, since it is larger than the sum of its proper divisors (299349877).

686743707 is a wasteful number, since it uses less digits than its factorization.

686743707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17608829.

The product of its (nonzero) digits is 1185408, while the sum is 48.

The square root of 686743707 is about 26205.7952941711. The cubic root of 686743707 is about 882.2633314218.

The spelling of 686743707 in words is "six hundred eighty-six million, seven hundred forty-three thousand, seven hundred seven".