685354318822 has 32 divisors (see below), whose sum is σ = 1100066778720. Its totient is φ = 319264830720.

The previous prime is 685354318813. The next prime is 685354318843. The reversal of 685354318822 is 228813453586.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15585138 + ... + 15629050.

It is an arithmetic number, because the mean of its divisors is an integer number (34377086835).

Almost surely, 2^685354318822 is an apocalyptic number.

685354318822 is a deficient number, since it is larger than the sum of its proper divisors (414712459898).

685354318822 is a wasteful number, since it uses less digits than its factorization.

685354318822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50728.

The product of its digits is 11059200, while the sum is 55.

The spelling of 685354318822 in words is "six hundred eighty-five billion, three hundred fifty-four million, three hundred eighteen thousand, eight hundred twenty-two".