985505 has 4 divisors (see below), whose sum is σ = 1182612. Its totient is φ = 788400.

The previous prime is 985499. The next prime is 985519. The reversal of 985505 is 505589.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 505589 = 7 ⋅72227.

It can be written as a sum of positive squares in 2 ways, for example, as 528529 + 456976 = 727^2 + 676^2 .

It is not a de Polignac number, because 985505 - 2¹⁰ = 984481 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98546 + ... + 98555.

It is an arithmetic number, because the mean of its divisors is an integer number (295653).

2⁹⁸⁵⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

985505 is a deficient number, since it is larger than the sum of its proper divisors (197107).

985505 is a wasteful number, since it uses less digits than its factorization.

985505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197106.

The product of its (nonzero) digits is 9000, while the sum is 32.

The square root of 985505 is about 992.7260447878. The cubic root of 985505 is about 99.5144798502.

The spelling of 985505 in words is "nine hundred eighty-five thousand, five hundred five".