680625176816 has 80 divisors (see below), whose sum is σ = 1502768816640. Its totient is φ = 296244453120.

The previous prime is 680625176801. The next prime is 680625176849. The reversal of 680625176816 is 618671526086.

It is a super-2 number, since 2×680625176816² (a number of 24 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 662246 + ... + 1341573.

It is an arithmetic number, because the mean of its divisors is an integer number (18784610208).

Almost surely, 2^680625176816 is an apocalyptic number.

It is an amenable number.

680625176816 is an abundant number, since it is smaller than the sum of its proper divisors (822143639824).

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

680625176816 is a wasteful number, since it uses less digits than its factorization.

680625176816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2003934 (or 2003928 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 56.

The spelling of 680625176816 in words is "six hundred eighty billion, six hundred twenty-five million, one hundred seventy-six thousand, eight hundred sixteen".