680661000704 has 20 divisors (see below), whose sum is σ = 1359992586414. Its totient is φ = 340330500096.

The previous prime is 680661000703. The next prime is 680661000737. The reversal of 680661000704 is 407000166086.

It can be written as a sum of positive squares in only one way, i.e., 476718440704 + 203942560000 = 690448^2 + 451600^2 .

It is not an unprimeable number, because it can be changed into a prime (680661000703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664707497 + ... + 664708520.

Almost surely, 2^680661000704 is an apocalyptic number.

680661000704 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

680661000704 is a deficient number, since it is larger than the sum of its proper divisors (679331585710).

680661000704 is an equidigital number, since it uses as much as digits as its factorization.

680661000704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329416035 (or 1329416019 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 680661000704 in words is "six hundred eighty billion, six hundred sixty-one million, seven hundred four", and thus it is an aban number.