680745017 has 8 divisors (see below), whose sum is σ = 697697280. Its totient is φ = 663809440.

The previous prime is 680744993. The next prime is 680745029. The reversal of 680745017 is 710547086.

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 680745017 - 2²⁸ = 412309561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680745047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135248 + ... + 140190.

It is an arithmetic number, because the mean of its divisors is an integer number (87212160).

Almost surely, 2^680745017 is an apocalyptic number.

It is an amenable number.

680745017 is a deficient number, since it is larger than the sum of its proper divisors (16952263).

680745017 is a wasteful number, since it uses less digits than its factorization.

680745017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8343.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 680745017 is about 26091.0907591078. The cubic root of 680745017 is about 879.6869655370.

The spelling of 680745017 in words is "six hundred eighty million, seven hundred forty-five thousand, seventeen".