206505007 has 2 divisors, whose sum is σ = 206505008. Its totient is φ = 206505006.

The previous prime is 206504983. The next prime is 206505023. The reversal of 206505007 is 700505602.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206505007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206505037) 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, 103252503 + 103252504.

It is an arithmetic number, because the mean of its divisors is an integer number (103252504).

Almost surely, 2^206505007 is an apocalyptic number.

206505007 is a deficient number, since it is larger than the sum of its proper divisors (1).

206505007 is an equidigital number, since it uses as much as digits as its factorization.

206505007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 206505007 is about 14370.2820779552. The cubic root of 206505007 is about 591.0762763926.

The spelling of 206505007 in words is "two hundred six million, five hundred five thousand, seven".