206804404 has 12 divisors (see below), whose sum is σ = 363489700. Its totient is φ = 102950208.

The previous prime is 206804399. The next prime is 206804407. The reversal of 206804404 is 404408602.

206804404 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 201696804 + 5107600 = 14202^2 + 2260^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206804407) 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, 111969 + ... + 113800.

Almost surely, 2^206804404 is an apocalyptic number.

It is an amenable number.

206804404 is a deficient number, since it is larger than the sum of its proper divisors (156685296).

206804404 is a wasteful number, since it uses less digits than its factorization.

206804404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226002 (or 226000 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 206804404 is about 14380.6955325534. The cubic root of 206804404 is about 591.3617916796.

The spelling of 206804404 in words is "two hundred six million, eight hundred four thousand, four hundred four".