306722668 has 12 divisors (see below), whose sum is σ = 613445392. Its totient is φ = 131452560.

The previous prime is 306722659. The next prime is 306722671. The reversal of 306722668 is 866227603.

306722668 is an admirable number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 306722668.

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, 5477163 + ... + 5477218.

Almost surely, 2^306722668 is an apocalyptic number.

It is an amenable number.

306722668 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

306722668 is a wasteful number, since it uses less digits than its factorization.

306722668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10954392 (or 10954390 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 306722668 is about 17513.4995931710. The cubic root of 306722668 is about 674.3964741669.

The spelling of 306722668 in words is "three hundred six million, seven hundred twenty-two thousand, six hundred sixty-eight".