861708 has 12 divisors (see below), whose sum is σ = 2010680. Its totient is φ = 287232.

The previous prime is 861703. The next prime is 861719. The reversal of 861708 is 807168.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861701) by changing a digit.

861708 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 3 ways as a sum of consecutive naturals, for example, 35893 + ... + 35916.

2⁸⁶¹⁷⁰⁸ is an apocalyptic number.

It is an amenable number.

861708 is an abundant number, since it is smaller than the sum of its proper divisors (1148972).

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

861708 is a wasteful number, since it uses less digits than its factorization.

861708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71816 (or 71814 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 861708 is about 928.2822846527. The cubic root of 861708 is about 95.1597680907.

It can be divided in two parts, 8 and 61708, that added together give a palindrome (61716).

The spelling of 861708 in words is "eight hundred sixty-one thousand, seven hundred eight".