680548646 has 8 divisors (see below), whose sum is σ = 1032293160. Its totient is φ = 336450928.

The previous prime is 680548643. The next prime is 680548651. The reversal of 680548646 is 646845086.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 680548646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680548643) 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 3 ways as a sum of consecutive naturals, for example, 1911476 + ... + 1911831.

It is an arithmetic number, because the mean of its divisors is an integer number (129036645).

Almost surely, 2^680548646 is an apocalyptic number.

680548646 is a deficient number, since it is larger than the sum of its proper divisors (351744514).

680548646 is a wasteful number, since it uses less digits than its factorization.

680548646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3823398.

The product of its (nonzero) digits is 1105920, while the sum is 47.

The square root of 680548646 is about 26087.3273065678. The cubic root of 680548646 is about 879.6023711501.

The spelling of 680548646 in words is "six hundred eighty million, five hundred forty-eight thousand, six hundred forty-six".