685176662016 has 1440 divisors, whose sum is σ = 2657121667200. Its totient is φ = 173903708160.

The previous prime is 685176661943. The next prime is 685176662041. The reversal of 685176662016 is 610266671586.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

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 119 ways as a sum of consecutive naturals, for example, 7063676880 + ... + 7063676976.

It is an arithmetic number, because the mean of its divisors is an integer number (1845223380).

Almost surely, 2^685176662016 is an apocalyptic number.

685176662016 is a gapful number since it is divisible by the number (66) 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 685176662016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1328560833600).

685176662016 is an abundant number, since it is smaller than the sum of its proper divisors (1971945005184).

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

685176662016 is a wasteful number, since it uses less digits than its factorization.

685176662016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 685176662016 in words is "six hundred eighty-five billion, one hundred seventy-six million, six hundred sixty-two thousand, sixteen".