206794891 has 2 divisors, whose sum is σ = 206794892. Its totient is φ = 206794890.

The previous prime is 206794883. The next prime is 206794921. The reversal of 206794891 is 198497602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 206794891 - 2³ = 206794883 is a prime.

It is not a weakly prime, because it can be changed into another prime (206794811) 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 as a sum of consecutive naturals, namely, 103397445 + 103397446.

It is an arithmetic number, because the mean of its divisors is an integer number (103397446).

Almost surely, 2^206794891 is an apocalyptic number.

206794891 is a deficient number, since it is larger than the sum of its proper divisors (1).

206794891 is an equidigital number, since it uses as much as digits as its factorization.

206794891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 206794891 is about 14380.3647728422. The cubic root of 206794891 is about 591.3527239956.

The spelling of 206794891 in words is "two hundred six million, seven hundred ninety-four thousand, eight hundred ninety-one".