680508380 has 12 divisors (see below), whose sum is σ = 1429067640. Its totient is φ = 272203344.

The previous prime is 680508379. The next prime is 680508391. The reversal of 680508380 is 83805086.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17012690 + ... + 17012729.

It is an arithmetic number, because the mean of its divisors is an integer number (119088970).

Almost surely, 2^680508380 is an apocalyptic number.

It is an amenable number.

680508380 is an abundant number, since it is smaller than the sum of its proper divisors (748559260).

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

680508380 is a wasteful number, since it uses less digits than its factorization.

680508380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34025428 (or 34025426 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 680508380 is about 26086.5555411212. Note that the first 4 decimals coincide. The cubic root of 680508380 is about 879.5850230061.

The spelling of 680508380 in words is "six hundred eighty million, five hundred eight thousand, three hundred eighty".