684245284 has 24 divisors (see below), whose sum is σ = 1212206688. Its totient is φ = 337921920.

The previous prime is 684245249. The next prime is 684245297. The reversal of 684245284 is 482542486.

It is a self number, because there is not a number n which added to its sum of digits gives 684245284.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136299 + ... + 141229.

It is an arithmetic number, because the mean of its divisors is an integer number (50508612).

Almost surely, 2^684245284 is an apocalyptic number.

It is an amenable number.

684245284 is a deficient number, since it is larger than the sum of its proper divisors (527961404).

684245284 is a wasteful number, since it uses less digits than its factorization.

684245284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5355 (or 5353 counting only the distinct ones).

The product of its digits is 491520, while the sum is 43.

The square root of 684245284 is about 26158.0825749901. The cubic root of 684245284 is about 881.1921188348.

The spelling of 684245284 in words is "six hundred eighty-four million, two hundred forty-five thousand, two hundred eighty-four".