1685404086 has 8 divisors (see below), whose sum is σ = 3370808184. Its totient is φ = 561801360.

The previous prime is 1685404043. The next prime is 1685404093. The reversal of 1685404086 is 6804045861.

It is a sphenic number, since it is the product of 3 distinct primes.

1685404086 is an admirable number.

It is a Curzon 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 3 ways as a sum of consecutive naturals, for example, 140450335 + ... + 140450346.

It is an arithmetic number, because the mean of its divisors is an integer number (421351023).

Almost surely, 2^1685404086 is an apocalyptic number.

1685404086 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.

1685404086 is a wasteful number, since it uses less digits than its factorization.

1685404086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280900686.

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 1685404086 is about 41053.6732339507. The cubic root of 1685404086 is about 1190.0576875737.

The spelling of 1685404086 in words is "one billion, six hundred eighty-five million, four hundred four thousand, eighty-six".