304573666 has 36 divisors (see below), whose sum is σ = 502705926. Its totient is φ = 137917440.

The previous prime is 304573663. The next prime is 304573673. The reversal of 304573666 is 666375403.

304573666 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 9 ways, for example, as 594441 + 303979225 = 771^2 + 17435^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304573663) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4172206 + ... + 4172278.

Almost surely, 2^304573666 is an apocalyptic number.

304573666 is a deficient number, since it is larger than the sum of its proper divisors (198132260).

304573666 is an equidigital number, since it uses as much as digits as its factorization.

304573666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 40.

The square root of 304573666 is about 17452.0390212720. The cubic root of 304573666 is about 672.8177653717.

The spelling of 304573666 in words is "three hundred four million, five hundred seventy-three thousand, six hundred sixty-six".