206334881 has 2 divisors, whose sum is σ = 206334882. Its totient is φ = 206334880.

The previous prime is 206334871. The next prime is 206334907. The reversal of 206334881 is 188433602.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137710225 + 68624656 = 11735^2 + 8284^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206334881 is a prime.

It is a super-2 number, since 2×206334881² = 85148166234568322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (206334871) 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, 103167440 + 103167441.

It is an arithmetic number, because the mean of its divisors is an integer number (103167441).

Almost surely, 2^206334881 is an apocalyptic number.

It is an amenable number.

206334881 is a deficient number, since it is larger than the sum of its proper divisors (1).

206334881 is an equidigital number, since it uses as much as digits as its factorization.

206334881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 206334881 is about 14364.3614894641. The cubic root of 206334881 is about 590.9139154069.

The spelling of 206334881 in words is "two hundred six million, three hundred thirty-four thousand, eight hundred eighty-one".