680315759 has 4 divisors (see below), whose sum is σ = 685672704. Its totient is φ = 674958816.

The previous prime is 680315731. The next prime is 680315777. The reversal of 680315759 is 957513086.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-680315759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680315059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2678282 + ... + 2678535.

It is an arithmetic number, because the mean of its divisors is an integer number (171418176).

Almost surely, 2^680315759 is an apocalyptic number.

680315759 is a deficient number, since it is larger than the sum of its proper divisors (5356945).

680315759 is a wasteful number, since it uses less digits than its factorization.

680315759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5356944.

The product of its (nonzero) digits is 226800, while the sum is 44.

The square root of 680315759 is about 26082.8633205789. The cubic root of 680315759 is about 879.5020249908.

The spelling of 680315759 in words is "six hundred eighty million, three hundred fifteen thousand, seven hundred fifty-nine".