985565 has 16 divisors (see below), whose sum is σ = 1399680. Its totient is φ = 651840.

The previous prime is 985547. The next prime is 985571. The reversal of 985565 is 565589.

It is not a de Polignac number, because 985565 - 2¹⁰ = 984541 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 530 + ... + 1500.

It is an arithmetic number, because the mean of its divisors is an integer number (87480).

2⁹⁸⁵⁵⁶⁵ is an apocalyptic number.

It is an amenable number.

985565 is a deficient number, since it is larger than the sum of its proper divisors (414115).

985565 is a wasteful number, since it uses less digits than its factorization.

985565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012.

The product of its digits is 54000, while the sum is 38.

The square root of 985565 is about 992.7562641454. The cubic root of 985565 is about 99.5164993724.

The spelling of 985565 in words is "nine hundred eighty-five thousand, five hundred sixty-five".