306505066 has 8 divisors (see below), whose sum is σ = 525437280. Its totient is φ = 131359308.

The previous prime is 306505051. The next prime is 306505079. The reversal of 306505066 is 660505603.

It is a happy number.

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, 10946596 + ... + 10946623.

It is an arithmetic number, because the mean of its divisors is an integer number (65679660).

Almost surely, 2^306505066 is an apocalyptic number.

306505066 is a deficient number, since it is larger than the sum of its proper divisors (218932214).

306505066 is a wasteful number, since it uses less digits than its factorization.

306505066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21893228.

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 306505066 is about 17507.2860832283. The cubic root of 306505066 is about 674.2369546681.

The spelling of 306505066 in words is "three hundred six million, five hundred five thousand, sixty-six".