680073894639 has 12 divisors (see below), whose sum is σ = 1014016990272. Its totient is φ = 438757351200.

The previous prime is 680073894629. The next prime is 680073894653. The reversal of 680073894639 is 936498370086.

It is not a de Polignac number, because 680073894639 - 2¹² = 680073890543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680073894629) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1218770142 + ... + 1218770699.

It is an arithmetic number, because the mean of its divisors is an integer number (84501415856).

Almost surely, 2^680073894639 is an apocalyptic number.

680073894639 is a deficient number, since it is larger than the sum of its proper divisors (333943095633).

680073894639 is a wasteful number, since it uses less digits than its factorization.

680073894639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2437540878 (or 2437540875 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 63.

The spelling of 680073894639 in words is "six hundred eighty billion, seventy-three million, eight hundred ninety-four thousand, six hundred thirty-nine".