206026906 has 4 divisors (see below), whose sum is σ = 309040362. Its totient is φ = 103013452.

The previous prime is 206026903. The next prime is 206026907. The reversal of 206026906 is 609620602.

206026906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 609620602 = 2 ⋅304810301.

It can be written as a sum of positive squares in only one way, i.e., 153536881 + 52490025 = 12391^2 + 7245^2 .

It is not an unprimeable number, because it can be changed into a prime (206026903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51506725 + ... + 51506728.

Almost surely, 2^206026906 is an apocalyptic number.

206026906 is a deficient number, since it is larger than the sum of its proper divisors (103013456).

206026906 is a wasteful number, since it uses less digits than its factorization.

206026906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103013455.

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

The square root of 206026906 is about 14353.6373787274. The cubic root of 206026906 is about 590.6197700646.

The spelling of 206026906 in words is "two hundred six million, twenty-six thousand, nine hundred six".