684056956 has 24 divisors (see below), whose sum is σ = 1337782320. Its totient is φ = 303350400.

The previous prime is 684056911. The next prime is 684056987. The reversal of 684056956 is 659650486.

It is a happy number.

684056956 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 187791 + ... + 191398.

It is an arithmetic number, because the mean of its divisors is an integer number (55740930).

Almost surely, 2^684056956 is an apocalyptic number.

It is an amenable number.

684056956 is a deficient number, since it is larger than the sum of its proper divisors (653725364).

684056956 is a wasteful number, since it uses less digits than its factorization.

684056956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379245 (or 379243 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 49.

The square root of 684056956 is about 26154.4825221223. The cubic root of 684056956 is about 881.1112665532. Note that the first 3 decimals are identical.

The spelling of 684056956 in words is "six hundred eighty-four million, fifty-six thousand, nine hundred fifty-six".