206302689 has 6 divisors (see below), whose sum is σ = 297992786. Its totient is φ = 137535120.

The previous prime is 206302669. The next prime is 206302697. The reversal of 206302689 is 986203602.

It can be written as a sum of positive squares in only one way, i.e., 141419664 + 64883025 = 11892^2 + 8055^2 .

It is not a de Polignac number, because 206302689 - 2⁷ = 206302561 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (206302619) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11461252 + ... + 11461269.

Almost surely, 2^206302689 is an apocalyptic number.

It is an amenable number.

206302689 is a deficient number, since it is larger than the sum of its proper divisors (91690097).

206302689 is a wasteful number, since it uses less digits than its factorization.

206302689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22922527 (or 22922524 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 206302689 is about 14363.2408947285. The cubic root of 206302689 is about 590.8831826970.

The spelling of 206302689 in words is "two hundred six million, three hundred two thousand, six hundred eighty-nine".