684364534240 has 96 divisors (see below), whose sum is σ = 1637740339200. Its totient is φ = 270223962624.

The previous prime is 684364534237. The next prime is 684364534267. The reversal of 684364534240 is 42435463486.

684364534240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3959059 + ... + 4128301.

It is an arithmetic number, because the mean of its divisors is an integer number (17059795200).

Almost surely, 2^684364534240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 684364534240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (818870169600).

684364534240 is an abundant number, since it is smaller than the sum of its proper divisors (953375804960).

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

684364534240 is a wasteful number, since it uses less digits than its factorization.

684364534240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169584 (or 169576 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 49.

The spelling of 684364534240 in words is "six hundred eighty-four billion, three hundred sixty-four million, five hundred thirty-four thousand, two hundred forty".