985647 has 16 divisors (see below), whose sum is σ = 1433600. Its totient is φ = 598752.

The previous prime is 985639. The next prime is 985657. The reversal of 985647 is 746589.

It is not a de Polignac number, because 985647 - 2³ = 985639 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4854 + ... + 5052.

It is an arithmetic number, because the mean of its divisors is an integer number (89600).

2⁹⁸⁵⁶⁴⁷ is an apocalyptic number.

985647 is a deficient number, since it is larger than the sum of its proper divisors (447953).

985647 is a wasteful number, since it uses less digits than its factorization.

985647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342.

The product of its digits is 60480, while the sum is 39.

The square root of 985647 is about 992.7975624466. The cubic root of 985647 is about 99.5192592535.

The spelling of 985647 in words is "nine hundred eighty-five thousand, six hundred forty-seven".