680391245 has 16 divisors (see below), whose sum is σ = 831600000. Its totient is φ = 534255168.

The previous prime is 680391211. The next prime is 680391251. The reversal of 680391245 is 542193086.

It is a happy number.

680391245 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 680391245 - 2²⁰ = 679342669 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 680391199 and 680391208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246131 + ... + 248879.

It is an arithmetic number, because the mean of its divisors is an integer number (51975000).

Almost surely, 2^680391245 is an apocalyptic number.

It is an amenable number.

680391245 is a deficient number, since it is larger than the sum of its proper divisors (151208755).

680391245 is a wasteful number, since it uses less digits than its factorization.

680391245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3652.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 680391245 is about 26084.3103224908. The cubic root of 680391245 is about 879.5345528445.

The spelling of 680391245 in words is "six hundred eighty million, three hundred ninety-one thousand, two hundred forty-five".