868985712 has 160 divisors (see below), whose sum is σ = 2893862400. Its totient is φ = 244518912.

The previous prime is 868985659. The next prime is 868985723. The reversal of 868985712 is 217589868.

868985712 is a `hidden beast` number, since 8 + 68 + 9 + 8 + 571 + 2 = 666.

It is a super-3 number, since 3×868985712³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 200464 + ... + 204752.

It is an arithmetic number, because the mean of its divisors is an integer number (18086640).

Almost surely, 2^868985712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 868985712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1446931200).

868985712 is an abundant number, since it is smaller than the sum of its proper divisors (2024876688).

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

868985712 is a wasteful number, since it uses less digits than its factorization.

868985712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4380 (or 4368 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 54.

The square root of 868985712 is about 29478.5636013697. The cubic root of 868985712 is about 954.2691380991.

The spelling of 868985712 in words is "eight hundred sixty-eight million, nine hundred eighty-five thousand, seven hundred twelve".