206944155 has 24 divisors (see below), whose sum is σ = 391313520. Its totient is φ = 100336320.

The previous prime is 206944151. The next prime is 206944159. The reversal of 206944155 is 551449602.

206944155 is a `hidden beast` number, since 206 + 9 + 441 + 5 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (206944151) and next prime (206944159).

It is not a de Polignac number, because 206944155 - 2² = 206944151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206944151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 208540 + ... + 209529.

It is an arithmetic number, because the mean of its divisors is an integer number (16304730).

Almost surely, 2^206944155 is an apocalyptic number.

206944155 is a deficient number, since it is larger than the sum of its proper divisors (184369365).

206944155 is a wasteful number, since it uses less digits than its factorization.

206944155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418091 (or 418088 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 206944155 is about 14385.5536911167. The cubic root of 206944155 is about 591.4949687160.

The spelling of 206944155 in words is "two hundred six million, nine hundred forty-four thousand, one hundred fifty-five".