863204 has 6 divisors (see below), whose sum is σ = 1510614. Its totient is φ = 431600.

The previous prime is 863197. The next prime is 863231. The reversal of 863204 is 402368.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 774400 + 88804 = 880^2 + 298^2 .

It is a super-2 number, since 2×863204² = 1490242291232, which contains 22 as substring.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 863204.

It is an unprimeable number.

863204 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, 107897 + ... + 107904.

It is an arithmetic number, because the mean of its divisors is an integer number (251769).

2⁸⁶³²⁰⁴ is an apocalyptic number.

It is an amenable number.

863204 is a deficient number, since it is larger than the sum of its proper divisors (647410).

863204 is a wasteful number, since it uses less digits than its factorization.

863204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215805 (or 215803 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 863204 is about 929.0877245987. The cubic root of 863204 is about 95.2148047969.

The spelling of 863204 in words is "eight hundred sixty-three thousand, two hundred four".