685884622838 has 8 divisors (see below), whose sum is σ = 1028843786280. Its totient is φ = 342936694080.

The previous prime is 685884622793. The next prime is 685884622849. The reversal of 685884622838 is 838226488586.

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

It is a super-2 number, since 2×685884622838² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2654348 + ... + 2901263.

It is an arithmetic number, because the mean of its divisors is an integer number (128605473285).

Almost surely, 2^685884622838 is an apocalyptic number.

685884622838 is a deficient number, since it is larger than the sum of its proper divisors (342959163442).

685884622838 is a wasteful number, since it uses less digits than its factorization.

685884622838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5617342.

The product of its digits is 283115520, while the sum is 68.

The spelling of 685884622838 in words is "six hundred eighty-five billion, eight hundred eighty-four million, six hundred twenty-two thousand, eight hundred thirty-eight".