863862 has 8 divisors (see below), whose sum is σ = 1727736. Its totient is φ = 287952.

The previous prime is 863851. The next prime is 863867. The reversal of 863862 is 268368.

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

863862 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863867) by changing a digit.

863862 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, 71983 + ... + 71994.

It is an arithmetic number, because the mean of its divisors is an integer number (215967).

2⁸⁶³⁸⁶² is an apocalyptic number.

863862 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

863862 is a wasteful number, since it uses less digits than its factorization.

863862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143982.

The product of its digits is 13824, while the sum is 33.

The square root of 863862 is about 929.4417679446. The cubic root of 863862 is about 95.2389919836.

The spelling of 863862 in words is "eight hundred sixty-three thousand, eight hundred sixty-two".