868786776 has 192 divisors, whose sum is σ = 2857797600. Its totient is φ = 242922240.

The previous prime is 868786771. The next prime is 868786781. The reversal of 868786776 is 677687868.

It is an interprime number because it is at equal distance from previous prime (868786771) and next prime (868786781).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868786771) 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 47 ways as a sum of consecutive naturals, for example, 338490 + ... + 341046.

Almost surely, 2^868786776 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 868786776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1428898800).

868786776 is an abundant number, since it is smaller than the sum of its proper divisors (1989010824).

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

868786776 is a wasteful number, since it uses less digits than its factorization.

868786776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2607 (or 2586 counting only the distinct ones).

The product of its digits is 37933056, while the sum is 63.

The square root of 868786776 is about 29475.1891596984. The cubic root of 868786776 is about 954.1963125927.

The spelling of 868786776 in words is "eight hundred sixty-eight million, seven hundred eighty-six thousand, seven hundred seventy-six".