206262197 has 2 divisors, whose sum is σ = 206262198. Its totient is φ = 206262196.

The previous prime is 206262187. The next prime is 206262211. The reversal of 206262197 is 791262602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152004241 + 54257956 = 12329^2 + 7366^2 .

It is a cyclic number.

It is not a de Polignac number, because 206262197 - 2²⁰ = 205213621 is a prime.

It is a super-2 number, since 2×206262197² = 85088187822533618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206262187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103131098 + 103131099.

It is an arithmetic number, because the mean of its divisors is an integer number (103131099).

Almost surely, 2^206262197 is an apocalyptic number.

It is an amenable number.

206262197 is a deficient number, since it is larger than the sum of its proper divisors (1).

206262197 is an equidigital number, since it uses as much as digits as its factorization.

206262197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 206262197 is about 14361.8312551011. The cubic root of 206262197 is about 590.8445216928.

The spelling of 206262197 in words is "two hundred six million, two hundred sixty-two thousand, one hundred ninety-seven".