868004 has 6 divisors (see below), whose sum is σ = 1519014. Its totient is φ = 434000.

The previous prime is 867991. The next prime is 868019. The reversal of 868004 is 400868.

It can be written as a sum of positive squares in only one way, i.e., 565504 + 302500 = 752^2 + 550^2 .

It is a plaindrome in base 15.

It is a zygodrome in base 3.

It is an unprimeable number.

868004 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108497 + ... + 108504.

It is an arithmetic number, because the mean of its divisors is an integer number (253169).

2⁸⁶⁸⁰⁰⁴ is an apocalyptic number.

It is an amenable number.

868004 is a deficient number, since it is larger than the sum of its proper divisors (651010).

868004 is a wasteful number, since it uses less digits than its factorization.

868004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217005 (or 217003 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 868004 is about 931.6673225996. The cubic root of 868004 is about 95.3909649846.

The spelling of 868004 in words is "eight hundred sixty-eight thousand, four".