305830666 has 4 divisors (see below), whose sum is σ = 458746002. Its totient is φ = 152915332.

The previous prime is 305830661. The next prime is 305830703. The reversal of 305830666 is 666038503.

305830666 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 251381025 + 54449641 = 15855^2 + 7379^2 .

It is not an unprimeable number, because it can be changed into a prime (305830661) by changing a digit.

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 as a sum of consecutive naturals, namely, 76457665 + ... + 76457668.

Almost surely, 2^305830666 is an apocalyptic number.

305830666 is a deficient number, since it is larger than the sum of its proper divisors (152915336).

305830666 is a wasteful number, since it uses less digits than its factorization.

305830666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152915335.

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

The square root of 305830666 is about 17488.0149245133. The cubic root of 305830666 is about 673.7420859525.

The spelling of 305830666 in words is "three hundred five million, eight hundred thirty thousand, six hundred sixty-six".