876642786 has 48 divisors (see below), whose sum is σ = 2011464000. Its totient is φ = 275158944.

The previous prime is 876642721. The next prime is 876642787. The reversal of 876642786 is 687246678.

876642786 is a `hidden beast` number, since 87 + 66 + 427 + 86 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (876642787) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49440 + ... + 64788.

It is an arithmetic number, because the mean of its divisors is an integer number (41905500).

Almost surely, 2^876642786 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 876642786, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1005732000).

876642786 is an abundant number, since it is smaller than the sum of its proper divisors (1134821214).

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

876642786 is a wasteful number, since it uses less digits than its factorization.

876642786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15543 (or 15540 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 54.

The square root of 876642786 is about 29608.1540458030. The cubic root of 876642786 is about 957.0637955657.

The spelling of 876642786 in words is "eight hundred seventy-six million, six hundred forty-two thousand, seven hundred eighty-six".