684410244 has 72 divisors (see below), whose sum is σ = 1865021760. Its totient is φ = 194773824.

The previous prime is 684410213. The next prime is 684410249. The reversal of 684410244 is 442014486.

It is not an unprimeable number, because it can be changed into a prime (684410249) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 156009 + ... + 160335.

It is an arithmetic number, because the mean of its divisors is an integer number (25903080).

Almost surely, 2^684410244 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 684410244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (932510880).

684410244 is an abundant number, since it is smaller than the sum of its proper divisors (1180611516).

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

684410244 is a wasteful number, since it uses less digits than its factorization.

684410244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4617 (or 4608 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 33.

The square root of 684410244 is about 26161.2355212822. The cubic root of 684410244 is about 881.2629266652.

The spelling of 684410244 in words is "six hundred eighty-four million, four hundred ten thousand, two hundred forty-four".