206664097 has 2 divisors, whose sum is σ = 206664098. Its totient is φ = 206664096.

The previous prime is 206664091. The next prime is 206664103. The reversal of 206664097 is 790466602.

It is a balanced prime because it is at equal distance from previous prime (206664091) and next prime (206664103).

It can be written as a sum of positive squares in only one way, i.e., 120099681 + 86564416 = 10959^2 + 9304^2 .

It is a cyclic number.

It is not a de Polignac number, because 206664097 - 2¹⁵ = 206631329 is a prime.

It is not a weakly prime, because it can be changed into another prime (206664091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103332048 + 103332049.

It is an arithmetic number, because the mean of its divisors is an integer number (103332049).

Almost surely, 2^206664097 is an apocalyptic number.

It is an amenable number.

206664097 is a deficient number, since it is larger than the sum of its proper divisors (1).

206664097 is an equidigital number, since it uses as much as digits as its factorization.

206664097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 206664097 is about 14375.8163942087. The cubic root of 206664097 is about 591.2280244280.

The spelling of 206664097 in words is "two hundred six million, six hundred sixty-four thousand, ninety-seven".