206997629 has 2 divisors, whose sum is σ = 206997630. Its totient is φ = 206997628.

The previous prime is 206997619. The next prime is 206997641. The reversal of 206997629 is 926799602.

206997629 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107536900 + 99460729 = 10370^2 + 9973^2 .

It is a cyclic number.

It is not a de Polignac number, because 206997629 - 2¹⁶ = 206932093 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206997619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103498814 + 103498815.

It is an arithmetic number, because the mean of its divisors is an integer number (103498815).

Almost surely, 2^206997629 is an apocalyptic number.

It is an amenable number.

206997629 is a deficient number, since it is larger than the sum of its proper divisors (1).

206997629 is an equidigital number, since it uses as much as digits as its factorization.

206997629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 734832, while the sum is 50.

The square root of 206997629 is about 14387.4121717563. The cubic root of 206997629 is about 591.5459114096.

The spelling of 206997629 in words is "two hundred six million, nine hundred ninety-seven thousand, six hundred twenty-nine".