1685065585 has 64 divisors (see below), whose sum is σ = 2503872000. Its totient is φ = 1062531072.

The previous prime is 1685065523. The next prime is 1685065589. The reversal of 1685065585 is 5855605861.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1685065585 - 2⁹ = 1685065073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1685065589) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7358251 + ... + 7358479.

It is an arithmetic number, because the mean of its divisors is an integer number (39123000).

Almost surely, 2^1685065585 is an apocalyptic number.

It is an amenable number.

1685065585 is a deficient number, since it is larger than the sum of its proper divisors (818806415).

1685065585 is a wasteful number, since it uses less digits than its factorization.

1685065585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490.

The product of its (nonzero) digits is 1440000, while the sum is 49.

The square root of 1685065585 is about 41049.5503629455. The cubic root of 1685065585 is about 1189.9780107982.

The spelling of 1685065585 in words is "one billion, six hundred eighty-five million, sixty-five thousand, five hundred eighty-five".