985599 has 12 divisors (see below), whose sum is σ = 1458912. Its totient is φ = 640800.

The previous prime is 985597. The next prime is 985601. The reversal of 985599 is 995589.

985599 is a `hidden beast` number, since 98 + 559 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (985597) and next prime (985601).

It is not a de Polignac number, because 985599 - 2¹ = 985597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985597) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 967 + ... + 1704.

It is an arithmetic number, because the mean of its divisors is an integer number (121576).

2⁹⁸⁵⁵⁹⁹ is an apocalyptic number.

985599 is a deficient number, since it is larger than the sum of its proper divisors (473313).

985599 is a wasteful number, since it uses less digits than its factorization.

985599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2718 (or 2715 counting only the distinct ones).

The product of its digits is 145800, while the sum is 45.

The square root of 985599 is about 992.7733880398. The cubic root of 985599 is about 99.5176437319.

The spelling of 985599 in words is "nine hundred eighty-five thousand, five hundred ninety-nine".