204810623 has 2 divisors, whose sum is σ = 204810624. Its totient is φ = 204810622.

The previous prime is 204810587. The next prime is 204810649. The reversal of 204810623 is 326018402.

It is an a-pointer prime, because the next prime (204810649) can be obtained adding 204810623 to its sum of digits (26).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204810623 - 2¹⁰ = 204809599 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204810592 and 204810601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204810923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102405311 + 102405312.

It is an arithmetic number, because the mean of its divisors is an integer number (102405312).

Almost surely, 2^204810623 is an apocalyptic number.

204810623 is a deficient number, since it is larger than the sum of its proper divisors (1).

204810623 is an equidigital number, since it uses as much as digits as its factorization.

204810623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 204810623 is about 14311.2062035316. The cubic root of 204810623 is about 589.4552311340.

The spelling of 204810623 in words is "two hundred four million, eight hundred ten thousand, six hundred twenty-three".