684098635776 has 48 divisors (see below), whose sum is σ = 1823817668400. Its totient is φ = 228032876544.

The previous prime is 684098635769. The next prime is 684098635777. The reversal of 684098635776 is 677536890486.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 684098635776.

It is not an unprimeable number, because it can be changed into a prime (684098635777) 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, 55665946 + ... + 55678233.

It is an arithmetic number, because the mean of its divisors is an integer number (37996201425).

Almost surely, 2^684098635776 is an apocalyptic number.

It is an amenable number.

684098635776 is an abundant number, since it is smaller than the sum of its proper divisors (1139719032624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

684098635776 is a wasteful number, since it uses less digits than its factorization.

684098635776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111344204 (or 111344184 counting only the distinct ones).

The product of its (nonzero) digits is 365783040, while the sum is 69.

The spelling of 684098635776 in words is "six hundred eighty-four billion, ninety-eight million, six hundred thirty-five thousand, seven hundred seventy-six".