686807422 has 16 divisors (see below), whose sum is σ = 1201413600. Its totient is φ = 294345744.

The previous prime is 686807413. The next prime is 686807447. The reversal of 686807422 is 224708686.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 499903 + ... + 501274.

It is an arithmetic number, because the mean of its divisors is an integer number (75088350).

Almost surely, 2^686807422 is an apocalyptic number.

686807422 is a deficient number, since it is larger than the sum of its proper divisors (514606178).

686807422 is a wasteful number, since it uses less digits than its factorization.

686807422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001200 (or 1001186 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 43.

The square root of 686807422 is about 26207.0109321914. The cubic root of 686807422 is about 882.2906155790.

The spelling of 686807422 in words is "six hundred eighty-six million, eight hundred seven thousand, four hundred twenty-two".