680006205669 has 32 divisors (see below), whose sum is σ = 1081452257280. Its totient is φ = 371611608192.

The previous prime is 680006205647. The next prime is 680006205673. The reversal of 680006205669 is 966502600086.

It is not a de Polignac number, because 680006205669 - 2¹⁷ = 680006074597 is a prime.

It is a super-2 number, since 2×680006205669² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680006201669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2538129 + ... + 2793225.

It is an arithmetic number, because the mean of its divisors is an integer number (33795383040).

Almost surely, 2^680006205669 is an apocalyptic number.

680006205669 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

680006205669 is a deficient number, since it is larger than the sum of its proper divisors (401446051611).

680006205669 is a wasteful number, since it uses less digits than its factorization.

680006205669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260649.

The product of its (nonzero) digits is 933120, while the sum is 48.

The spelling of 680006205669 in words is "six hundred eighty billion, six million, two hundred five thousand, six hundred sixty-nine".