985855687 has 8 divisors (see below), whose sum is σ = 1047540816. Its totient is φ = 924580992.

The previous prime is 985855681. The next prime is 985855697. The reversal of 985855687 is 786558589.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-985855687 is a prime.

It is a super-2 number, since 2×985855687² = 1943822871180483938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985855681) 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, 97648 + ... + 107269.

It is an arithmetic number, because the mean of its divisors is an integer number (130942602).

Almost surely, 2^985855687 is an apocalyptic number.

985855687 is a deficient number, since it is larger than the sum of its proper divisors (61685129).

985855687 is a wasteful number, since it uses less digits than its factorization.

985855687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205217.

The product of its digits is 24192000, while the sum is 61.

The square root of 985855687 is about 31398.3389210321. The cubic root of 985855687 is about 995.2628235951.

The spelling of 985855687 in words is "nine hundred eighty-five million, eight hundred fifty-five thousand, six hundred eighty-seven".