866760 has 64 divisors (see below), whose sum is σ = 2695680. Its totient is φ = 222720.

The previous prime is 866759. The next prime is 866777. The reversal of 866760 is 67668.

866760 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 931²-1.

It is a plaindrome in base 13.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 866760.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3604 + ... + 3836.

It is an arithmetic number, because the mean of its divisors is an integer number (42120).

2⁸⁶⁶⁷⁶⁰ 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 866760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1347840).

866760 is an abundant number, since it is smaller than the sum of its proper divisors (1828920).

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

866760 is a wasteful number, since it uses less digits than its factorization.

866760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 866760 is about 930.9994629429. Note that the first 3 decimals coincide. The cubic root of 866760 is about 95.3453726081.

The spelling of 866760 in words is "eight hundred sixty-six thousand, seven hundred sixty".