685208811468 has 12 divisors (see below), whose sum is σ = 1598820560120. Its totient is φ = 228402937152.

The previous prime is 685208811437. The next prime is 685208811481. The reversal of 685208811468 is 864118802586.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×685208811468² (a number of 24 digits) contains 22 as substring.

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, 28550367133 + ... + 28550367156.

Almost surely, 2^685208811468 is an apocalyptic number.

It is an amenable number.

685208811468 is an abundant number, since it is smaller than the sum of its proper divisors (913611748652).

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

685208811468 is a wasteful number, since it uses less digits than its factorization.

685208811468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57100734296 (or 57100734294 counting only the distinct ones).

The product of its (nonzero) digits is 5898240, while the sum is 57.

The spelling of 685208811468 in words is "six hundred eighty-five billion, two hundred eight million, eight hundred eleven thousand, four hundred sixty-eight".