680518345 has 16 divisors (see below), whose sum is σ = 925727040. Its totient is φ = 476086464.

The previous prime is 680518343. The next prime is 680518351. The reversal of 680518345 is 543815086.

680518345 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 680518345 - 2¹ = 680518343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 680518298 and 680518307.

It is not an unprimeable number, because it can be changed into a prime (680518343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274279 + ... + 276748.

It is an arithmetic number, because the mean of its divisors is an integer number (57857940).

Almost surely, 2^680518345 is an apocalyptic number.

680518345 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

680518345 is a deficient number, since it is larger than the sum of its proper divisors (245208695).

680518345 is a wasteful number, since it uses less digits than its factorization.

680518345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551064.

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 680518345 is about 26086.7465391911. The cubic root of 680518345 is about 879.5893163757.

The spelling of 680518345 in words is "six hundred eighty million, five hundred eighteen thousand, three hundred forty-five".