204680497 has 6 divisors (see below), whose sum is σ = 238097778. Its totient is φ = 175440384.

The previous prime is 204680491. The next prime is 204680513. The reversal of 204680497 is 794086402.

It can be written as a sum of positive squares in only one way, i.e., 190550416 + 14130081 = 13804^2 + 3759^2 .

It is not a de Polignac number, because 204680497 - 2¹⁹ = 204156209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204680491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2088528 + ... + 2088625.

It is an arithmetic number, because the mean of its divisors is an integer number (39682963).

Almost surely, 2^204680497 is an apocalyptic number.

It is an amenable number.

204680497 is a deficient number, since it is larger than the sum of its proper divisors (33417281).

204680497 is an equidigital number, since it uses as much as digits as its factorization.

204680497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4177167 (or 4177160 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 204680497 is about 14306.6591837508. The cubic root of 204680497 is about 589.3303683047.

The spelling of 204680497 in words is "two hundred four million, six hundred eighty thousand, four hundred ninety-seven".