680206143 has 4 divisors (see below), whose sum is σ = 906941528. Its totient is φ = 453470760.

The previous prime is 680206067. The next prime is 680206151. The reversal of 680206143 is 341602086.

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

It is not a de Polignac number, because 680206143 - 2²⁸ = 411770687 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 680206143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680206183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113367688 + ... + 113367693.

It is an arithmetic number, because the mean of its divisors is an integer number (226735382).

Almost surely, 2^680206143 is an apocalyptic number.

680206143 is a deficient number, since it is larger than the sum of its proper divisors (226735385).

680206143 is a wasteful number, since it uses less digits than its factorization.

680206143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226735384.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 680206143 is about 26080.7619328884. The cubic root of 680206143 is about 879.4547858125.

The spelling of 680206143 in words is "six hundred eighty million, two hundred six thousand, one hundred forty-three".