985686385 has 16 divisors (see below), whose sum is σ = 1226092032. Its totient is φ = 759916800.

The previous prime is 985686341. The next prime is 985686407. The reversal of 985686385 is 583686589.

It is a happy number.

It is not a de Polignac number, because 985686385 - 2⁹ = 985685873 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24162 + ... + 50548.

It is an arithmetic number, because the mean of its divisors is an integer number (76630752).

Almost surely, 2^985686385 is an apocalyptic number.

It is an amenable number.

985686385 is a deficient number, since it is larger than the sum of its proper divisors (240405647).

985686385 is a wasteful number, since it uses less digits than its factorization.

985686385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26664.

The product of its digits is 12441600, while the sum is 58.

The square root of 985686385 is about 31395.6427709324. The cubic root of 985686385 is about 995.2058478344.

The spelling of 985686385 in words is "nine hundred eighty-five million, six hundred eighty-six thousand, three hundred eighty-five".