306305866 has 8 divisors (see below), whose sum is σ = 460761444. Its totient is φ = 152718720.

The previous prime is 306305849. The next prime is 306305891. The reversal of 306305866 is 668503603.

306305866 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 2 ways, for example, as 258405625 + 47900241 = 16075^2 + 6921^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216225 + ... + 217636.

Almost surely, 2^306305866 is an apocalyptic number.

306305866 is a deficient number, since it is larger than the sum of its proper divisors (154455578).

306305866 is a wasteful number, since it uses less digits than its factorization.

306305866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434216.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 306305866 is about 17501.5960986420. The cubic root of 306305866 is about 674.0908590863.

The spelling of 306305866 in words is "three hundred six million, three hundred five thousand, eight hundred sixty-six".