406804 has 6 divisors (see below), whose sum is σ = 711914. Its totient is φ = 203400.

The previous prime is 406789. The next prime is 406807. The reversal of 406804 is 408604.

406804 = T₄₄₉ + T₄₅₀ + ... + T₄₅₂.

It can be written as a sum of positive squares in only one way, i.e., 204304 + 202500 = 452^2 + 450^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50847 + ... + 50854.

2⁴⁰⁶⁸⁰⁴ is an apocalyptic number.

It is an amenable number.

406804 is a deficient number, since it is larger than the sum of its proper divisors (305110).

406804 is a wasteful number, since it uses less digits than its factorization.

406804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101705 (or 101703 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 406804 is about 637.8118844926. The cubic root of 406804 is about 74.0960525275.

The spelling of 406804 in words is "four hundred six thousand, eight hundred four".