861706 has 16 divisors (see below), whose sum is σ = 1360800. Its totient is φ = 408688.

The previous prime is 861703. The next prime is 861719. The reversal of 861706 is 607168.

It is not an unprimeable number, because it can be changed into a prime (861701) 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, 4725 + ... + 4903.

It is an arithmetic number, because the mean of its divisors is an integer number (85050).

2⁸⁶¹⁷⁰⁶ is an apocalyptic number.

861706 is a deficient number, since it is larger than the sum of its proper divisors (499094).

861706 is a wasteful number, since it uses less digits than its factorization.

861706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 861706 is about 928.2812073935. The cubic root of 861706 is about 95.1596944696.

The spelling of 861706 in words is "eight hundred sixty-one thousand, seven hundred six".