680238517 has 8 divisors (see below), whose sum is σ = 792084096. Its totient is φ = 572060112.

The previous prime is 680238497. The next prime is 680238521. The reversal of 680238517 is 715832086.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 680238517 - 2¹⁹ = 679714229 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 680238517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680238577) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 916393 + ... + 917134.

It is an arithmetic number, because the mean of its divisors is an integer number (99010512).

Almost surely, 2^680238517 is an apocalyptic number.

It is an amenable number.

680238517 is a deficient number, since it is larger than the sum of its proper divisors (111845579).

680238517 is a wasteful number, since it uses less digits than its factorization.

680238517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1833587.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 680238517 is about 26081.3825745492. The cubic root of 680238517 is about 879.4687379640.

The spelling of 680238517 in words is "six hundred eighty million, two hundred thirty-eight thousand, five hundred seventeen".