985731860 has 24 divisors (see below), whose sum is σ = 2073283296. Its totient is φ = 393674400.

The previous prime is 985731847. The next prime is 985731863. The reversal of 985731860 is 68137589.

It is a happy number.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985731863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25466 + ... + 51185.

It is an arithmetic number, because the mean of its divisors is an integer number (86386804).

Almost surely, 2^985731860 is an apocalyptic number.

It is an amenable number.

985731860 is an abundant number, since it is smaller than the sum of its proper divisors (1087551436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

985731860 is a wasteful number, since it uses less digits than its factorization.

985731860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77303 (or 77301 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 985731860 is about 31396.3669872806. The cubic root of 985731860 is about 995.2211523270.

The spelling of 985731860 in words is "nine hundred eighty-five million, seven hundred thirty-one thousand, eight hundred sixty".