684079700000 has 72 divisors (see below), whose sum is σ = 1683369890244. Its totient is φ = 273631840000.

The previous prime is 684079699999. The next prime is 684079700027. The reversal of 684079700000 is 7970486.

It can be written as a sum of positive squares in 6 ways, for example, as 23897449744 + 660182250256 = 154588^2 + 812516^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3320399 + ... + 3520398.

Almost surely, 2^684079700000 is an apocalyptic number.

It is an amenable number.

684079700000 is an abundant number, since it is smaller than the sum of its proper divisors (999290190244).

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

684079700000 is an frugal number, since it uses more digits than its factorization.

684079700000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6840832 (or 6840804 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 41.

The spelling of 684079700000 in words is "six hundred eighty-four billion, seventy-nine million, seven hundred thousand".