206789427 has 24 divisors (see below), whose sum is σ = 322297248. Its totient is φ = 127008000.

The previous prime is 206789419. The next prime is 206789441. The reversal of 206789427 is 724987602.

It is not a de Polignac number, because 206789427 - 2³ = 206789419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206789447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72427 + ... + 75227.

It is an arithmetic number, because the mean of its divisors is an integer number (13429052).

Almost surely, 2^206789427 is an apocalyptic number.

206789427 is a deficient number, since it is larger than the sum of its proper divisors (115507821).

206789427 is a wasteful number, since it uses less digits than its factorization.

206789427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3451 (or 3448 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 206789427 is about 14380.1747903146. The cubic root of 206789427 is about 591.3475156468.

The spelling of 206789427 in words is "two hundred six million, seven hundred eighty-nine thousand, four hundred twenty-seven".