206319604 has 12 divisors (see below), whose sum is σ = 361361700. Its totient is φ = 103073408.

The previous prime is 206319583. The next prime is 206319623. The reversal of 206319604 is 406913602.

It can be written as a sum of positive squares in 2 ways, for example, as 158709604 + 47610000 = 12598^2 + 6900^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16069 + ... + 25900.

It is an arithmetic number, because the mean of its divisors is an integer number (30113475).

Almost surely, 2^206319604 is an apocalyptic number.

It is an amenable number.

206319604 is a deficient number, since it is larger than the sum of its proper divisors (155042096).

206319604 is a wasteful number, since it uses less digits than its factorization.

206319604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43202 (or 43200 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 206319604 is about 14363.8297121624. The cubic root of 206319604 is about 590.8993313246.

The spelling of 206319604 in words is "two hundred six million, three hundred nineteen thousand, six hundred four".