206810056 has 8 divisors (see below), whose sum is σ = 387768870. Its totient is φ = 103405024.

The previous prime is 206810047. The next prime is 206810059. The reversal of 206810056 is 650018602.

206810056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 155401156 + 51408900 = 12466^2 + 7170^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (206810059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12925621 + ... + 12925636.

Almost surely, 2^206810056 is an apocalyptic number.

It is an amenable number.

206810056 is a deficient number, since it is larger than the sum of its proper divisors (180958814).

206810056 is a wasteful number, since it uses less digits than its factorization.

206810056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25851263 (or 25851259 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 206810056 is about 14380.8920446543. The cubic root of 206810056 is about 591.3671789705.

Adding to 206810056 its reverse (650018602), we get a palindrome (856828658).

The spelling of 206810056 in words is "two hundred six million, eight hundred ten thousand, fifty-six".