680667841 has 24 divisors (see below), whose sum is σ = 802929024. Its totient is φ = 565125120.

The previous prime is 680667839. The next prime is 680667853. The reversal of 680667841 is 148766086.

It is a happy number.

It is not a de Polignac number, because 680667841 - 2¹ = 680667839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 680667791 and 680667800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680667821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2648385 + ... + 2648641.

It is an arithmetic number, because the mean of its divisors is an integer number (33455376).

Almost surely, 2^680667841 is an apocalyptic number.

It is an amenable number.

680667841 is a deficient number, since it is larger than the sum of its proper divisors (122261183).

680667841 is an equidigital number, since it uses as much as digits as its factorization.

680667841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481 (or 408 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 680667841 is about 26089.6117449072. The cubic root of 680667841 is about 879.6537209372.

It can be divided in two parts, 6806 and 67841, that added together give a palindrome (74647).

The spelling of 680667841 in words is "six hundred eighty million, six hundred sixty-seven thousand, eight hundred forty-one".