680305571 has 8 divisors (see below), whose sum is σ = 766092288. Its totient is φ = 598509000.

The previous prime is 680305559. The next prime is 680305597. The reversal of 680305571 is 175503086.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-680305571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680305501) 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, 997175 + ... + 997856.

It is an arithmetic number, because the mean of its divisors is an integer number (95761536).

Almost surely, 2^680305571 is an apocalyptic number.

680305571 is a deficient number, since it is larger than the sum of its proper divisors (85786717).

680305571 is a wasteful number, since it uses less digits than its factorization.

680305571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995073.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 680305571 is about 26082.6680192039. The cubic root of 680305571 is about 879.4976346709.

The spelling of 680305571 in words is "six hundred eighty million, three hundred five thousand, five hundred seventy-one".