684202344 has 128 divisors (see below), whose sum is σ = 2059223040. Its totient is φ = 185213952.

The previous prime is 684202327. The next prime is 684202357. The reversal of 684202344 is 443202486.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 435849 + ... + 437415.

It is an arithmetic number, because the mean of its divisors is an integer number (16087680).

Almost surely, 2^684202344 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 684202344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1029611520).

684202344 is an abundant number, since it is smaller than the sum of its proper divisors (1375020696).

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

684202344 is a wasteful number, since it uses less digits than its factorization.

684202344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1719 (or 1715 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 33.

The square root of 684202344 is about 26157.2617832983. The cubic root of 684202344 is about 881.1736852983.

The spelling of 684202344 in words is "six hundred eighty-four million, two hundred two thousand, three hundred forty-four".