680604404 has 12 divisors (see below), whose sum is σ = 1207374084. Its totient is φ = 335640384.

The previous prime is 680604391. The next prime is 680604409. The reversal of 680604404 is 404406086.

It can be written as a sum of positive squares in 2 ways, for example, as 139948900 + 540655504 = 11830^2 + 23252^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680604409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1165127 + ... + 1165710.

It is an arithmetic number, because the mean of its divisors is an integer number (100614507).

Almost surely, 2^680604404 is an apocalyptic number.

It is an amenable number.

680604404 is a deficient number, since it is larger than the sum of its proper divisors (526769680).

680604404 is a wasteful number, since it uses less digits than its factorization.

680604404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2330914 (or 2330912 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 680604404 is about 26088.3959644897. The cubic root of 680604404 is about 879.6263927146.

The spelling of 680604404 in words is "six hundred eighty million, six hundred four thousand, four hundred four".