680905710571 has 16 divisors (see below), whose sum is σ = 704168478720. Its totient is φ = 657725149440.

The previous prime is 680905710539. The next prime is 680905710623. The reversal of 680905710571 is 175017509086.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 680905710571 - 2⁵ = 680905710539 is a prime.

It is a super-2 number, since 2×680905710571² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680905710671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44129560 + ... + 44144986.

It is an arithmetic number, because the mean of its divisors is an integer number (44010529920).

Almost surely, 2^680905710571 is an apocalyptic number.

680905710571 is a deficient number, since it is larger than the sum of its proper divisors (23262768149).

680905710571 is a wasteful number, since it uses less digits than its factorization.

680905710571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17994.

The product of its (nonzero) digits is 529200, while the sum is 49.

The spelling of 680905710571 in words is "six hundred eighty billion, nine hundred five million, seven hundred ten thousand, five hundred seventy-one".