684008406896 has 20 divisors (see below), whose sum is σ = 1382886562512. Its totient is φ = 327134455296.

The previous prime is 684008406877. The next prime is 684008406899. The reversal of 684008406896 is 698604800486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684008406899) 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, 929358881 + ... + 929359616.

Almost surely, 2^684008406896 is an apocalyptic number.

It is an amenable number.

684008406896 is an abundant number, since it is smaller than the sum of its proper divisors (698878155616).

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

684008406896 is a wasteful number, since it uses less digits than its factorization.

684008406896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858718528 (or 1858718522 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 59.

The spelling of 684008406896 in words is "six hundred eighty-four billion, eight million, four hundred six thousand, eight hundred ninety-six".