205150697 has 2 divisors, whose sum is σ = 205150698. Its totient is φ = 205150696.

The previous prime is 205150613. The next prime is 205150703. The reversal of 205150697 is 796051502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186349801 + 18800896 = 13651^2 + 4336^2 .

It is a cyclic number.

It is not a de Polignac number, because 205150697 - 2²⁰ = 204102121 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (205150097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102575348 + 102575349.

It is an arithmetic number, because the mean of its divisors is an integer number (102575349).

Almost surely, 2^205150697 is an apocalyptic number.

It is an amenable number.

205150697 is a deficient number, since it is larger than the sum of its proper divisors (1).

205150697 is an equidigital number, since it uses as much as digits as its factorization.

205150697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 205150697 is about 14323.0826640078. The cubic root of 205150697 is about 589.7813007301.

The spelling of 205150697 in words is "two hundred five million, one hundred fifty thousand, six hundred ninety-seven".