204641 has 2 divisors, whose sum is σ = 204642. Its totient is φ = 204640.

The previous prime is 204623. The next prime is 204667. The reversal of 204641 is 146402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112225 + 92416 = 335^2 + 304^2 .

It is a cyclic number.

It is not a de Polignac number, because 204641 - 2¹⁰ = 203617 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 2¹⁷ + 0 + 6⁵ + 4⁴ + 4⁸ + 1 .

It is not a weakly prime, because it can be changed into another prime (204601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102320 + 102321.

It is an arithmetic number, because the mean of its divisors is an integer number (102321).

2²⁰⁴⁶⁴¹ is an apocalyptic number.

It is an amenable number.

204641 is a deficient number, since it is larger than the sum of its proper divisors (1).

204641 is an equidigital number, since it uses as much as digits as its factorization.

204641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 204641 is about 452.3726340087. The cubic root of 204641 is about 58.9292458360.

The spelling of 204641 in words is "two hundred four thousand, six hundred forty-one".