206266427 has 4 divisors (see below), whose sum is σ = 206409840. Its totient is φ = 206123016.

The previous prime is 206266421. The next prime is 206266469. The reversal of 206266427 is 724662602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 206266427 - 2⁶ = 206266363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206266421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69527 + ... + 72432.

It is an arithmetic number, because the mean of its divisors is an integer number (51602460).

Almost surely, 2^206266427 is an apocalyptic number.

206266427 is a deficient number, since it is larger than the sum of its proper divisors (143413).

206266427 is a wasteful number, since it uses less digits than its factorization.

206266427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143412.

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 206266427 is about 14361.9785196887. The cubic root of 206266427 is about 590.8485606543.

The spelling of 206266427 in words is "two hundred six million, two hundred sixty-six thousand, four hundred twenty-seven".