684590396 has 12 divisors (see below), whose sum is σ = 1369180848. Its totient is φ = 293395872.

The previous prime is 684590371. The next prime is 684590441. The reversal of 684590396 is 693095486.

684590396 is an admirable number.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

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 in 3 ways as a sum of consecutive naturals, for example, 12224801 + ... + 12224856.

It is an arithmetic number, because the mean of its divisors is an integer number (114098404).

Almost surely, 2^684590396 is an apocalyptic number.

It is an amenable number.

684590396 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

684590396 is a wasteful number, since it uses less digits than its factorization.

684590396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24449668 (or 24449666 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 50.

The square root of 684590396 is about 26164.6784042915. The cubic root of 684590396 is about 881.3402425501.

The spelling of 684590396 in words is "six hundred eighty-four million, five hundred ninety thousand, three hundred ninety-six".