684931214203 has 4 divisors (see below), whose sum is σ = 685006831080. Its totient is φ = 684855597328.

The previous prime is 684931214183. The next prime is 684931214213. The reversal of 684931214203 is 302412139486.

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

It is a cyclic number.

It is not a de Polignac number, because 684931214203 - 2²¹ = 684929117051 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 684931214203.

It is not an unprimeable number, because it can be changed into a prime (684931214213) 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, 37794850 + ... + 37812967.

It is an arithmetic number, because the mean of its divisors is an integer number (171251707770).

Almost surely, 2^684931214203 is an apocalyptic number.

684931214203 is a deficient number, since it is larger than the sum of its proper divisors (75616877).

684931214203 is an equidigital number, since it uses as much as digits as its factorization.

684931214203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75616876.

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 684931214203 in words is "six hundred eighty-four billion, nine hundred thirty-one million, two hundred fourteen thousand, two hundred three".