866705 has 8 divisors (see below), whose sum is σ = 1188672. Its totient is φ = 594288.

The previous prime is 866693. The next prime is 866707. The reversal of 866705 is 507668.

866705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 866705 - 2⁴ = 866689 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 866705.

It is not an unprimeable number, because it can be changed into a prime (866707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12347 + ... + 12416.

It is an arithmetic number, because the mean of its divisors is an integer number (148584).

2⁸⁶⁶⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

866705 is a deficient number, since it is larger than the sum of its proper divisors (321967).

866705 is a wasteful number, since it uses less digits than its factorization.

866705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24775.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 866705 is about 930.9699243262. The cubic root of 866705 is about 95.3433558613.

The spelling of 866705 in words is "eight hundred sixty-six thousand, seven hundred five".