868717782 has 48 divisors (see below), whose sum is σ = 1998240192. Its totient is φ = 271814400.

The previous prime is 868717771. The next prime is 868717793. The reversal of 868717782 is 287717868.

It is an interprime number because it is at equal distance from previous prime (868717771) and next prime (868717793).

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 23 ways as a sum of consecutive naturals, for example, 117907 + ... + 125057.

It is an arithmetic number, because the mean of its divisors is an integer number (41630004).

Almost surely, 2^868717782 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 868717782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (999120096).

868717782 is an abundant number, since it is smaller than the sum of its proper divisors (1129522410).

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

868717782 is a wasteful number, since it uses less digits than its factorization.

868717782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7573 (or 7570 counting only the distinct ones).

The product of its digits is 2107392, while the sum is 54.

The square root of 868717782 is about 29474.0187622930. The cubic root of 868717782 is about 954.1710530143.

The spelling of 868717782 in words is "eight hundred sixty-eight million, seven hundred seventeen thousand, seven hundred eighty-two".