206604523 has 2 divisors, whose sum is σ = 206604524. Its totient is φ = 206604522.

The previous prime is 206604473. The next prime is 206604571. The reversal of 206604523 is 325406602.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206604523 is a prime.

It is equal to p_11424196 and since 206604523 and 11424196 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 206604491 and 206604500.

It is not a weakly prime, because it can be changed into another prime (206604023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103302261 + 103302262.

It is an arithmetic number, because the mean of its divisors is an integer number (103302262).

Almost surely, 2^206604523 is an apocalyptic number.

206604523 is a deficient number, since it is larger than the sum of its proper divisors (1).

206604523 is an equidigital number, since it uses as much as digits as its factorization.

206604523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 206604523 is about 14373.7442234096. The cubic root of 206604523 is about 591.1712088776.

The spelling of 206604523 in words is "two hundred six million, six hundred four thousand, five hundred twenty-three".