985664 has 14 divisors (see below), whose sum is σ = 1956054. Its totient is φ = 492800.

The previous prime is 985657. The next prime is 985667. The reversal of 985664 is 466589.

It can be written as a sum of positive squares in only one way, i.e., 984064 + 1600 = 992^2 + 40^2 .

It is not an unprimeable number, because it can be changed into a prime (985667) by changing a digit.

985664 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7637 + ... + 7764.

2⁹⁸⁵⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

985664 is a deficient number, since it is larger than the sum of its proper divisors (970390).

985664 is a wasteful number, since it uses less digits than its factorization.

985664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15413 (or 15403 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The square root of 985664 is about 992.8061240746. The cubic root of 985664 is about 99.5198314048.

The spelling of 985664 in words is "nine hundred eighty-five thousand, six hundred sixty-four".