206866804 has 12 divisors (see below), whose sum is σ = 362117700. Its totient is φ = 103404608.

The previous prime is 206866801. The next prime is 206866817. The reversal of 206866804 is 408668602.

It can be written as a sum of positive squares in 2 ways, for example, as 26501904 + 180364900 = 5148^2 + 13430^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206866801) 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, 23712 + ... + 31240.

It is an arithmetic number, because the mean of its divisors is an integer number (30176475).

Almost surely, 2^206866804 is an apocalyptic number.

It is an amenable number.

206866804 is a deficient number, since it is larger than the sum of its proper divisors (155250896).

206866804 is a wasteful number, since it uses less digits than its factorization.

206866804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14402 (or 14400 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 206866804 is about 14382.8649440923. The cubic root of 206866804 is about 591.4212637609.

The spelling of 206866804 in words is "two hundred six million, eight hundred sixty-six thousand, eight hundred four".