307288066 has 8 divisors (see below), whose sum is σ = 461139660. Its totient is φ = 153574848.

The previous prime is 307288061. The next prime is 307288067. The reversal of 307288066 is 660882703.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 306425025 + 863041 = 17505^2 + 929^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (307288061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28851 + ... + 38038.

Almost surely, 2^307288066 is an apocalyptic number.

307288066 is a deficient number, since it is larger than the sum of its proper divisors (153851594).

307288066 is a wasteful number, since it uses less digits than its factorization.

307288066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69188.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 307288066 is about 17529.6339379920. The cubic root of 307288066 is about 674.8106032869.

The spelling of 307288066 in words is "three hundred seven million, two hundred eighty-eight thousand, sixty-six".