985785716 has 12 divisors (see below), whose sum is σ = 1744509060. Its totient is φ = 487354560.

The previous prime is 985785701. The next prime is 985785733. The reversal of 985785716 is 617587589.

985785716 = 3284² + 3285² + ... + 3372².

It can be written as a sum of positive squares in 2 ways, for example, as 519657616 + 466128100 = 22796^2 + 21590^2 .

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, 1384175 + ... + 1384886.

It is an arithmetic number, because the mean of its divisors is an integer number (145375755).

Almost surely, 2^985785716 is an apocalyptic number.

It is an amenable number.

985785716 is a deficient number, since it is larger than the sum of its proper divisors (758723344).

985785716 is a wasteful number, since it uses less digits than its factorization.

985785716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2769154 (or 2769152 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 56.

The square root of 985785716 is about 31397.2246544181. The cubic root of 985785716 is about 995.2392768145.

The spelling of 985785716 in words is "nine hundred eighty-five million, seven hundred eighty-five thousand, seven hundred sixteen".