205974473 has 2 divisors, whose sum is σ = 205974474. Its totient is φ = 205974472.

The previous prime is 205974467. The next prime is 205974481. The reversal of 205974473 is 374479502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132066064 + 73908409 = 11492^2 + 8597^2 .

It is a cyclic number.

It is not a de Polignac number, because 205974473 - 2⁸ = 205974217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 205974473.

It is not a weakly prime, because it can be changed into another prime (205974403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102987236 + 102987237.

It is an arithmetic number, because the mean of its divisors is an integer number (102987237).

Almost surely, 2^205974473 is an apocalyptic number.

It is an amenable number.

205974473 is a deficient number, since it is larger than the sum of its proper divisors (1).

205974473 is an equidigital number, since it uses as much as digits as its factorization.

205974473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 41.

The square root of 205974473 is about 14351.8107916736. The cubic root of 205974473 is about 590.5696623798.

The spelling of 205974473 in words is "two hundred five million, nine hundred seventy-four thousand, four hundred seventy-three".