684410203240 has 64 divisors (see below), whose sum is σ = 1630613883600. Its totient is φ = 257643368448.

The previous prime is 684410203231. The next prime is 684410203241. The reversal of 684410203240 is 42302014486.

684410203240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 542128854436 + 142281348804 = 736294^2 + 377202^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 684410203196 and 684410203205.

It is not an unprimeable number, because it can be changed into a prime (684410203241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16079106 + ... + 16121614.

Almost surely, 2^684410203240 is an apocalyptic number.

It is an amenable number.

684410203240 is an abundant number, since it is smaller than the sum of its proper divisors (946203680360).

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

684410203240 is a wasteful number, since it uses less digits than its factorization.

684410203240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66214 (or 66210 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 34.

The spelling of 684410203240 in words is "six hundred eighty-four billion, four hundred ten million, two hundred three thousand, two hundred forty".