684581052 has 24 divisors (see below), whose sum is σ = 1600704000. Its totient is φ = 227715376.

The previous prime is 684581033. The next prime is 684581063. The reversal of 684581052 is 250185486.

684581052 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 684581052.

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, 53802 + ... + 65297.

It is an arithmetic number, because the mean of its divisors is an integer number (66696000).

Almost surely, 2^684581052 is an apocalyptic number.

It is an amenable number.

684581052 is an abundant number, since it is smaller than the sum of its proper divisors (916122948).

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

684581052 is a wasteful number, since it uses less digits than its factorization.

684581052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119585 (or 119583 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 39.

The square root of 684581052 is about 26164.4998423436. The cubic root of 684581052 is about 881.3362327165.

The spelling of 684581052 in words is "six hundred eighty-four million, five hundred eighty-one thousand, fifty-two".