866796 has 48 divisors (see below), whose sum is σ = 2451456. Its totient is φ = 232704.

The previous prime is 866783. The next prime is 866819. The reversal of 866796 is 697668.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

866796 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1125 + ... + 1731.

It is an arithmetic number, because the mean of its divisors is an integer number (51072).

2⁸⁶⁶⁷⁹⁶ 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 866796, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1225728).

866796 is an abundant number, since it is smaller than the sum of its proper divisors (1584660).

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

866796 is a wasteful number, since it uses less digits than its factorization.

866796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638 (or 636 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 866796 is about 931.0187968027. The cubic root of 866796 is about 95.3466926144.

The spelling of 866796 in words is "eight hundred sixty-six thousand, seven hundred ninety-six".