206216629 has 2 divisors, whose sum is σ = 206216630. Its totient is φ = 206216628.

The previous prime is 206216603. The next prime is 206216653. The reversal of 206216629 is 926612602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141848100 + 64368529 = 11910^2 + 8023^2 .

It is a cyclic number.

It is not a de Polignac number, because 206216629 - 2⁷ = 206216501 is a prime.

It is a super-2 number, since 2×206216629² = 85050596152247282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 206216594 and 206216603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206216669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103108314 + 103108315.

It is an arithmetic number, because the mean of its divisors is an integer number (103108315).

Almost surely, 2^206216629 is an apocalyptic number.

It is an amenable number.

206216629 is a deficient number, since it is larger than the sum of its proper divisors (1).

206216629 is an equidigital number, since it uses as much as digits as its factorization.

206216629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 206216629 is about 14360.2447402543. The cubic root of 206216629 is about 590.8010081673.

The spelling of 206216629 in words is "two hundred six million, two hundred sixteen thousand, six hundred twenty-nine".