859868 has 6 divisors (see below), whose sum is σ = 1504776. Its totient is φ = 429932.

The previous prime is 859861. The next prime is 859891. The reversal of 859868 is 868958.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (859861) by changing a digit.

859868 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 as a sum of consecutive naturals, namely, 107480 + ... + 107487.

It is an arithmetic number, because the mean of its divisors is an integer number (250796).

2⁸⁵⁹⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

859868 is a deficient number, since it is larger than the sum of its proper divisors (644908).

859868 is a wasteful number, since it uses less digits than its factorization.

859868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214971 (or 214969 counting only the distinct ones).

The product of its digits is 138240, while the sum is 44.

The square root of 859868 is about 927.2906771881. The cubic root of 859868 is about 95.0919884612.

The spelling of 859868 in words is "eight hundred fifty-nine thousand, eight hundred sixty-eight".