985489666 has 24 divisors (see below), whose sum is σ = 1721740860. Its totient is φ = 421821792.

The previous prime is 985489633. The next prime is 985489693. The reversal of 985489666 is 666984589.

It can be written as a sum of positive squares in 2 ways, for example, as 690165441 + 295324225 = 26271^2 + 17185^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77700 + ... + 89488.

Almost surely, 2^985489666 is an apocalyptic number.

985489666 is a deficient number, since it is larger than the sum of its proper divisors (736251194).

985489666 is a wasteful number, since it uses less digits than its factorization.

985489666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12658 (or 12651 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 61.

The square root of 985489666 is about 31392.5097117131. The cubic root of 985489666 is about 995.1396371452.

The spelling of 985489666 in words is "nine hundred eighty-five million, four hundred eighty-nine thousand, six hundred sixty-six".