306643606 has 4 divisors (see below), whose sum is σ = 459965412. Its totient is φ = 153321802.

The previous prime is 306643549. The next prime is 306643607. The reversal of 306643606 is 606346603.

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

It is a super-2 number, since 2×306643606² = 188060602201366472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306643607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76660900 + ... + 76660903.

It is an arithmetic number, because the mean of its divisors is an integer number (114991353).

Almost surely, 2^306643606 is an apocalyptic number.

306643606 is a deficient number, since it is larger than the sum of its proper divisors (153321806).

306643606 is a wasteful number, since it uses less digits than its factorization.

306643606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153321805.

The product of its (nonzero) digits is 46656, while the sum is 34.

The square root of 306643606 is about 17511.2422746075. The cubic root of 306643606 is about 674.3385241885.

The spelling of 306643606 in words is "three hundred six million, six hundred forty-three thousand, six hundred six".