685486162368 has 560 divisors, whose sum is σ = 2472193785600. Its totient is φ = 183443927040.

The previous prime is 685486162367. The next prime is 685486162397. The reversal of 685486162368 is 863261684586.

It is a happy number.

685486162368 is a `hidden beast` number, since 6 + 8 + 5 + 4 + 8 + 616 + 2 + 3 + 6 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685486162363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 61357423 + ... + 61368593.

It is an arithmetic number, because the mean of its divisors is an integer number (4414631760).

Almost surely, 2^685486162368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 685486162368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1236096892800).

685486162368 is an abundant number, since it is smaller than the sum of its proper divisors (1786707623232).

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

685486162368 is a wasteful number, since it uses less digits than its factorization.

685486162368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11310 (or 11291 counting only the distinct ones).

The product of its digits is 79626240, while the sum is 63.

The spelling of 685486162368 in words is "six hundred eighty-five billion, four hundred eighty-six million, one hundred sixty-two thousand, three hundred sixty-eight".