206537423 has 2 divisors, whose sum is σ = 206537424. Its totient is φ = 206537422.

The previous prime is 206537413. The next prime is 206537473. The reversal of 206537423 is 324735602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 206537423 - 2⁸ = 206537167 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 206537423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206537413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103268711 + 103268712.

It is an arithmetic number, because the mean of its divisors is an integer number (103268712).

Almost surely, 2^206537423 is an apocalyptic number.

206537423 is a deficient number, since it is larger than the sum of its proper divisors (1).

206537423 is an equidigital number, since it uses as much as digits as its factorization.

206537423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 32.

The square root of 206537423 is about 14371.4099169149. The cubic root of 206537423 is about 591.1072027228.

The spelling of 206537423 in words is "two hundred six million, five hundred thirty-seven thousand, four hundred twenty-three".