680609108 has 24 divisors (see below), whose sum is σ = 1261468320. Its totient is φ = 320410080.

The previous prime is 680609107. The next prime is 680609113. The reversal of 680609108 is 801906086.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680609107) 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 7 ways as a sum of consecutive naturals, for example, 15083 + ... + 39858.

It is an arithmetic number, because the mean of its divisors is an integer number (52561180).

Almost surely, 2^680609108 is an apocalyptic number.

It is an amenable number.

680609108 is a deficient number, since it is larger than the sum of its proper divisors (580859212).

680609108 is a wasteful number, since it uses less digits than its factorization.

680609108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55127 (or 55125 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 680609108 is about 26088.4861193592. The cubic root of 680609108 is about 879.6284192237.

The spelling of 680609108 in words is "six hundred eighty million, six hundred nine thousand, one hundred eight".