206047069 has 2 divisors, whose sum is σ = 206047070. Its totient is φ = 206047068.

The previous prime is 206047031. The next prime is 206047091. The reversal of 206047069 is 960740602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204919225 + 1127844 = 14315^2 + 1062^2 .

It is a cyclic number.

It is not a de Polignac number, because 206047069 - 2⁷ = 206046941 is a prime.

It is a super-2 number, since 2×206047069² = 84910789286981522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206047019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103023534 + 103023535.

It is an arithmetic number, because the mean of its divisors is an integer number (103023535).

Almost surely, 2^206047069 is an apocalyptic number.

It is an amenable number.

206047069 is a deficient number, since it is larger than the sum of its proper divisors (1).

206047069 is an equidigital number, since it uses as much as digits as its factorization.

206047069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 206047069 is about 14354.3397270651. The cubic root of 206047069 is about 590.6390366064.

The spelling of 206047069 in words is "two hundred six million, forty-seven thousand, sixty-nine".