206090737 has 2 divisors, whose sum is σ = 206090738. Its totient is φ = 206090736.

The previous prime is 206090707. The next prime is 206090747. The reversal of 206090737 is 737090602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195748081 + 10342656 = 13991^2 + 3216^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206090737 is a prime.

It is not a weakly prime, because it can be changed into another prime (206090707) 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, 103045368 + 103045369.

It is an arithmetic number, because the mean of its divisors is an integer number (103045369).

Almost surely, 2^206090737 is an apocalyptic number.

It is an amenable number.

206090737 is a deficient number, since it is larger than the sum of its proper divisors (1).

206090737 is an equidigital number, since it uses as much as digits as its factorization.

206090737 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 206090737 is about 14355.8607195807. The cubic root of 206090737 is about 590.6807587943.

The spelling of 206090737 in words is "two hundred six million, ninety thousand, seven hundred thirty-seven".