1685432686 has 16 divisors (see below), whose sum is σ = 3014936064. Its totient is φ = 690922584.

The previous prime is 1685432669. The next prime is 1685432711. The reversal of 1685432686 is 6862345861.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2616810 + ... + 2617453.

It is an arithmetic number, because the mean of its divisors is an integer number (188433504).

Almost surely, 2^1685432686 is an apocalyptic number.

1685432686 is a deficient number, since it is larger than the sum of its proper divisors (1329503378).

1685432686 is a wasteful number, since it uses less digits than its factorization.

1685432686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5234295.

The product of its digits is 1658880, while the sum is 49.

The square root of 1685432686 is about 41054.0215569681. The cubic root of 1685432686 is about 1190.0644189876.

The spelling of 1685432686 in words is "one billion, six hundred eighty-five million, four hundred thirty-two thousand, six hundred eighty-six".