1686044704 has 12 divisors (see below), whose sum is σ = 3319400574. Its totient is φ = 843022336.

The previous prime is 1686044699. The next prime is 1686044713. The reversal of 1686044704 is 4074406861.

It can be written as a sum of positive squares in only one way, i.e., 1685923600 + 121104 = 41060^2 + 348^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26344417 + ... + 26344480.

Almost surely, 2^1686044704 is an apocalyptic number.

It is an amenable number.

1686044704 is a deficient number, since it is larger than the sum of its proper divisors (1633355870).

1686044704 is an equidigital number, since it uses as much as digits as its factorization.

1686044704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52688907 (or 52688899 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 1686044704 is about 41061.4746934398. The cubic root of 1686044704 is about 1190.2084478198.

The spelling of 1686044704 in words is "one billion, six hundred eighty-six million, forty-four thousand, seven hundred four".