684313144 has 8 divisors (see below), whose sum is σ = 1283087160. Its totient is φ = 342156568.

The previous prime is 684313111. The next prime is 684313153. The reversal of 684313144 is 441313486.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42769564 + ... + 42769579.

It is an arithmetic number, because the mean of its divisors is an integer number (160385895).

Almost surely, 2^684313144 is an apocalyptic number.

It is an amenable number.

684313144 is a deficient number, since it is larger than the sum of its proper divisors (598774016).

684313144 is a wasteful number, since it uses less digits than its factorization.

684313144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85539149 (or 85539145 counting only the distinct ones).

The product of its digits is 27648, while the sum is 34.

The square root of 684313144 is about 26159.3796562533. The cubic root of 684313144 is about 881.2212486034.

The spelling of 684313144 in words is "six hundred eighty-four million, three hundred thirteen thousand, one hundred forty-four".