868323666 has 64 divisors (see below), whose sum is σ = 2041272576. Its totient is φ = 241075200.

The previous prime is 868323653. The next prime is 868323667. The reversal of 868323666 is 666323868.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (868323667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 503686 + ... + 505406.

It is an arithmetic number, because the mean of its divisors is an integer number (31894884).

Almost surely, 2^868323666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 868323666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1020636288).

868323666 is an abundant number, since it is smaller than the sum of its proper divisors (1172948910).

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

868323666 is a wasteful number, since it uses less digits than its factorization.

868323666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2067.

The product of its digits is 1492992, while the sum is 48.

The square root of 868323666 is about 29467.3321832839. The cubic root of 868323666 is about 954.0267365018.

The spelling of 868323666 in words is "eight hundred sixty-eight million, three hundred twenty-three thousand, six hundred sixty-six".