680995848968 has 36 divisors (see below), whose sum is σ = 1286732420415. Its totient is φ = 337887247056.

The previous prime is 680995848943. The next prime is 680995848971. The reversal of 680995848968 is 869848599086.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 340497924484 + 340497924484 = 583522^2 + 583522^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=583522.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 680995848892 and 680995848901.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 324437183 + ... + 324439281.

Almost surely, 2^680995848968 is an apocalyptic number.

It is an amenable number.

680995848968 is a deficient number, since it is larger than the sum of its proper divisors (605736571447).

680995848968 is an frugal number, since it uses more digits than its factorization.

680995848968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4482 (or 2240 counting only the distinct ones).

The product of its (nonzero) digits is 2149908480, while the sum is 80.

The spelling of 680995848968 in words is "six hundred eighty billion, nine hundred ninety-five million, eight hundred forty-eight thousand, nine hundred sixty-eight".