868166712 has 144 divisors (see below), whose sum is σ = 2787375240. Its totient is φ = 243315072.

The previous prime is 868166711. The next prime is 868166723. The reversal of 868166712 is 217661868.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868166711) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 184663 + ... + 189305.

Almost surely, 2^868166712 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 868166712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1393687620).

868166712 is an abundant number, since it is smaller than the sum of its proper divisors (1919208528).

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

868166712 is a wasteful number, since it uses less digits than its factorization.

868166712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4722 (or 4708 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 868166712 is about 29464.6688764697. The cubic root of 868166712 is about 953.9692512801.

It can be divided in two parts, 86816 and 6712, that added together give a triangular number (93528 = T₄₃₂).

The spelling of 868166712 in words is "eight hundred sixty-eight million, one hundred sixty-six thousand, seven hundred twelve".