206723029 has 2 divisors, whose sum is σ = 206723030. Its totient is φ = 206723028.

The previous prime is 206723017. The next prime is 206723039. The reversal of 206723029 is 920327602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203490225 + 3232804 = 14265^2 + 1798^2 .

It is a cyclic number.

It is not a de Polignac number, because 206723029 - 2¹⁵ = 206690261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206723039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103361514 + 103361515.

It is an arithmetic number, because the mean of its divisors is an integer number (103361515).

Almost surely, 2^206723029 is an apocalyptic number.

It is an amenable number.

206723029 is a deficient number, since it is larger than the sum of its proper divisors (1).

206723029 is an equidigital number, since it uses as much as digits as its factorization.

206723029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 206723029 is about 14377.8659403960. The cubic root of 206723029 is about 591.2842169632.

The spelling of 206723029 in words is "two hundred six million, seven hundred twenty-three thousand, twenty-nine".