680605082871 has 16 divisors (see below), whose sum is σ = 1043107382784. Its totient is φ = 386669111904.

The previous prime is 680605082851. The next prime is 680605082923. The reversal of 680605082871 is 178280506086.

It is not a de Polignac number, because 680605082871 - 2¹⁰ = 680605081847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680605082821) 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, 93666211 + ... + 93673476.

It is an arithmetic number, because the mean of its divisors is an integer number (65194211424).

Almost surely, 2^680605082871 is an apocalyptic number.

680605082871 is a deficient number, since it is larger than the sum of its proper divisors (362502299913).

680605082871 is a wasteful number, since it uses less digits than its factorization.

680605082871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187339870.

The product of its (nonzero) digits is 1290240, while the sum is 51.

The spelling of 680605082871 in words is "six hundred eighty billion, six hundred five million, eighty-two thousand, eight hundred seventy-one".