816704 has 28 divisors (see below), whose sum is σ = 1853184. Its totient is φ = 349824.

The previous prime is 816703. The next prime is 816709. The reversal of 816704 is 407618.

It is a tau number, because it is divible by the number of its divisors (28).

It is a nialpdrome in base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 816704.

It is not an unprimeable number, because it can be changed into a prime (816703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464 + ... + 1359.

2⁸¹⁶⁷⁰⁴ is an apocalyptic number.

It is an amenable number.

816704 is an abundant number, since it is smaller than the sum of its proper divisors (1036480).

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

816704 is a wasteful number, since it uses less digits than its factorization.

816704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842 (or 1832 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 816704 is about 903.7167697902. The cubic root of 816704 is about 93.4734403672.

The spelling of 816704 in words is "eight hundred sixteen thousand, seven hundred four".