680066904 has 64 divisors (see below), whose sum is σ = 1868365440. Its totient is φ = 204565760.

The previous prime is 680066899. The next prime is 680066911. The reversal of 680066904 is 409660086.

680066904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×680066904² = 924981987832290432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26767 + ... + 45569.

It is an arithmetic number, because the mean of its divisors is an integer number (29193210).

Almost surely, 2^680066904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 680066904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (934182720).

680066904 is an abundant number, since it is smaller than the sum of its proper divisors (1188298536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

680066904 is a wasteful number, since it uses less digits than its factorization.

680066904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18960 (or 18956 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 680066904 is about 26078.0924148988. The cubic root of 680066904 is about 879.3947732400.

The spelling of 680066904 in words is "six hundred eighty million, sixty-six thousand, nine hundred four".