684004276 has 6 divisors (see below), whose sum is σ = 1197007490. Its totient is φ = 342002136.

The previous prime is 684004267. The next prime is 684004283. The reversal of 684004276 is 672400486.

It can be written as a sum of positive squares in only one way, i.e., 513022500 + 170981776 = 22650^2 + 13076^2 .

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, 85500531 + ... + 85500538.

Almost surely, 2^684004276 is an apocalyptic number.

It is an amenable number.

684004276 is a deficient number, since it is larger than the sum of its proper divisors (513003214).

684004276 is a wasteful number, since it uses less digits than its factorization.

684004276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171001073 (or 171001071 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 684004276 is about 26153.4754095894. The cubic root of 684004276 is about 881.0886475141.

The spelling of 684004276 in words is "six hundred eighty-four million, four thousand, two hundred seventy-six".