208320680867 has 8 divisors (see below), whose sum is σ = 224349234480. Its totient is φ = 192292682400.

The previous prime is 208320680809. The next prime is 208320680903. The reversal of 208320680867 is 768086023802.

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

It is not a de Polignac number, because 208320680867 - 2¹⁸ = 208320418723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208320683867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 966884 + ... + 1162542.

It is an arithmetic number, because the mean of its divisors is an integer number (28043654310).

Almost surely, 2^208320680867 is an apocalyptic number.

208320680867 is a deficient number, since it is larger than the sum of its proper divisors (16028553613).

208320680867 is a wasteful number, since it uses less digits than its factorization.

208320680867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277573.

The product of its (nonzero) digits is 1548288, while the sum is 50.

The spelling of 208320680867 in words is "two hundred eight billion, three hundred twenty million, six hundred eighty thousand, eight hundred sixty-seven".