680995520971 has 8 divisors (see below), whose sum is σ = 682455726720. Its totient is φ = 679535476608.

The previous prime is 680995520911. The next prime is 680995520993. The reversal of 680995520971 is 179025599086.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 680995520971 - 2¹³ = 680995512779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680995520911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12636435 + ... + 12690211.

It is an arithmetic number, because the mean of its divisors is an integer number (85306965840).

Almost surely, 2^680995520971 is an apocalyptic number.

680995520971 is a deficient number, since it is larger than the sum of its proper divisors (1460205749).

680995520971 is a wasteful number, since it uses less digits than its factorization.

680995520971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80693.

The product of its (nonzero) digits is 12247200, while the sum is 61.

The spelling of 680995520971 in words is "six hundred eighty billion, nine hundred ninety-five million, five hundred twenty thousand, nine hundred seventy-one".