685628631422 has 16 divisors (see below), whose sum is σ = 1244502390240. Its totient is φ = 276556086528.

The previous prime is 685628631421. The next prime is 685628631449. The reversal of 685628631422 is 224136826586.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685628631421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1440396047 + ... + 1440396522.

It is an arithmetic number, because the mean of its divisors is an integer number (77781399390).

Almost surely, 2^685628631422 is an apocalyptic number.

685628631422 is a deficient number, since it is larger than the sum of its proper divisors (558873758818).

685628631422 is a wasteful number, since it uses less digits than its factorization.

685628631422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2880792595.

The product of its digits is 6635520, while the sum is 53.

The spelling of 685628631422 in words is "six hundred eighty-five billion, six hundred twenty-eight million, six hundred thirty-one thousand, four hundred twenty-two".