985865684 has 12 divisors (see below), whose sum is σ = 1725722964. Its totient is φ = 492801984.

The previous prime is 985865659. The next prime is 985865693. The reversal of 985865684 is 486568589.

It can be written as a sum of positive squares in 2 ways, for example, as 582739600 + 403126084 = 24140^2 + 20078^2 .

It is a super-2 number, since 2×985865684² = 1943862293777575712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14657 + ... + 46760.

It is an arithmetic number, because the mean of its divisors is an integer number (143810247).

Almost surely, 2^985865684 is an apocalyptic number.

It is an amenable number.

985865684 is a deficient number, since it is larger than the sum of its proper divisors (739857280).

985865684 is a wasteful number, since it uses less digits than its factorization.

985865684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65434 (or 65432 counting only the distinct ones).

The product of its digits is 16588800, while the sum is 59.

The square root of 985865684 is about 31398.4981169482. The cubic root of 985865684 is about 995.2661877145.

The spelling of 985865684 in words is "nine hundred eighty-five million, eight hundred sixty-five thousand, six hundred eighty-four".