686845422 has 12 divisors (see below), whose sum is σ = 1488165120. Its totient is φ = 228948468.

The previous prime is 686845417. The next prime is 686845447. The reversal of 686845422 is 224548686.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19079022 + ... + 19079057.

It is an arithmetic number, because the mean of its divisors is an integer number (124013760).

Almost surely, 2^686845422 is an apocalyptic number.

686845422 is an abundant number, since it is smaller than the sum of its proper divisors (801319698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

686845422 is a wasteful number, since it uses less digits than its factorization.

686845422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38158087 (or 38158084 counting only the distinct ones).

The product of its digits is 737280, while the sum is 45.

The square root of 686845422 is about 26207.7359189992. The cubic root of 686845422 is about 882.3068872073.

The spelling of 686845422 in words is "six hundred eighty-six million, eight hundred forty-five thousand, four hundred twenty-two".