816104 has 8 divisors (see below), whose sum is σ = 1530210. Its totient is φ = 408048.

The previous prime is 816103. The next prime is 816113. The reversal of 816104 is 401618.

It can be written as a sum of positive squares in only one way, i.e., 813604 + 2500 = 902^2 + 50^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (816103) by changing a digit.

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, 50999 + ... + 51014.

2⁸¹⁶¹⁰⁴ is an apocalyptic number.

It is an amenable number.

816104 is a deficient number, since it is larger than the sum of its proper divisors (714106).

816104 is a wasteful number, since it uses less digits than its factorization.

816104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102019 (or 102015 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 816104 is about 903.3847463844. The cubic root of 816104 is about 93.4505443510.

The spelling of 816104 in words is "eight hundred sixteen thousand, one hundred four".