680287982517 has 24 divisors (see below), whose sum is σ = 1154428093728. Its totient is φ = 380580688800.

The previous prime is 680287982461. The next prime is 680287982537. The reversal of 680287982517 is 715289782086.

680287982517 is a `hidden beast` number, since 6 + 8 + 0 + 28 + 7 + 98 + 2 + 517 = 666.

It is not a de Polignac number, because 680287982517 - 2⁶ = 680287982453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680287982537) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 264290859 + ... + 264293432.

It is an arithmetic number, because the mean of its divisors is an integer number (48101170572).

Almost surely, 2^680287982517 is an apocalyptic number.

It is an amenable number.

680287982517 is a deficient number, since it is larger than the sum of its proper divisors (474140111211).

680287982517 is a wasteful number, since it uses less digits than its factorization.

680287982517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528584321 (or 528584318 counting only the distinct ones).

The product of its (nonzero) digits is 27095040, while the sum is 63.

The spelling of 680287982517 in words is "six hundred eighty billion, two hundred eighty-seven million, nine hundred eighty-two thousand, five hundred seventeen".