685703376384 has 320 divisors, whose sum is σ = 2002423670016. Its totient is φ = 207235252224.

The previous prime is 685703376361. The next prime is 685703376511. The reversal of 685703376384 is 483673307586.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 731806764 + ... + 731807700.

Almost surely, 2^685703376384 is an apocalyptic number.

685703376384 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 685703376384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1001211835008).

685703376384 is an abundant number, since it is smaller than the sum of its proper divisors (1316720293632).

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

685703376384 is a wasteful number, since it uses less digits than its factorization.

685703376384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585 (or 1569 counting only the distinct ones).

The product of its (nonzero) digits is 60963840, while the sum is 60.

The spelling of 685703376384 in words is "six hundred eighty-five billion, seven hundred three million, three hundred seventy-six thousand, three hundred eighty-four".