206066437 has 2 divisors, whose sum is σ = 206066438. Its totient is φ = 206066436.

The previous prime is 206066429. The next prime is 206066467. The reversal of 206066437 is 734660602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186978276 + 19088161 = 13674^2 + 4369^2 .

It is a cyclic number.

It is not a de Polignac number, because 206066437 - 2³ = 206066429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206066467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103033218 + 103033219.

It is an arithmetic number, because the mean of its divisors is an integer number (103033219).

Almost surely, 2^206066437 is an apocalyptic number.

It is an amenable number.

206066437 is a deficient number, since it is larger than the sum of its proper divisors (1).

206066437 is an equidigital number, since it uses as much as digits as its factorization.

206066437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 206066437 is about 14355.0143503934. The cubic root of 206066437 is about 590.6575423108.

The spelling of 206066437 in words is "two hundred six million, sixty-six thousand, four hundred thirty-seven".