684684198344 has 32 divisors (see below), whose sum is σ = 1289783658240. Its totient is φ = 340742472000.

The previous prime is 684684198307. The next prime is 684684198349. The reversal of 684684198344 is 443891486486.

It is not an unprimeable number, because it can be changed into a prime (684684198349) 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, 10208519 + ... + 10275369.

It is an arithmetic number, because the mean of its divisors is an integer number (40305739320).

Almost surely, 2^684684198344 is an apocalyptic number.

It is an amenable number.

684684198344 is a deficient number, since it is larger than the sum of its proper divisors (605099459896).

684684198344 is a wasteful number, since it uses less digits than its factorization.

684684198344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72821 (or 72817 counting only the distinct ones).

The product of its digits is 127401984, while the sum is 65.

The spelling of 684684198344 in words is "six hundred eighty-four billion, six hundred eighty-four million, one hundred ninety-eight thousand, three hundred forty-four".