680366076679 has 4 divisors (see below), whose sum is σ = 683819711784. Its totient is φ = 676912441576.

The previous prime is 680366076671. The next prime is 680366076703. The reversal of 680366076679 is 976670663086.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 976670663086 = 2 ⋅488335331543.

It is a cyclic number.

It is not a de Polignac number, because 680366076679 - 2³ = 680366076671 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 680366076679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680366076671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1726817257 + ... + 1726817650.

It is an arithmetic number, because the mean of its divisors is an integer number (170954927946).

Almost surely, 2^680366076679 is an apocalyptic number.

680366076679 is a deficient number, since it is larger than the sum of its proper divisors (3453635105).

680366076679 is a wasteful number, since it uses less digits than its factorization.

680366076679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3453635104.

The product of its (nonzero) digits is 82301184, while the sum is 64.

The spelling of 680366076679 in words is "six hundred eighty billion, three hundred sixty-six million, seventy-six thousand, six hundred seventy-nine".