306497668 has 6 divisors (see below), whose sum is σ = 536370926. Its totient is φ = 153248832.

The previous prime is 306497629. The next prime is 306497689. The reversal of 306497668 is 866794603.

It can be written as a sum of positive squares in only one way, i.e., 253382724 + 53114944 = 15918^2 + 7288^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38312205 + ... + 38312212.

Almost surely, 2^306497668 is an apocalyptic number.

It is an amenable number.

306497668 is a deficient number, since it is larger than the sum of its proper divisors (229873258).

306497668 is a wasteful number, since it uses less digits than its factorization.

306497668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76624421 (or 76624419 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 49.

The square root of 306497668 is about 17507.0747984922. The cubic root of 306497668 is about 674.2315300214.

The spelling of 306497668 in words is "three hundred six million, four hundred ninety-seven thousand, six hundred sixty-eight".