306080069 has 2 divisors, whose sum is σ = 306080070. Its totient is φ = 306080068.

The previous prime is 306080039. The next prime is 306080107. The reversal of 306080069 is 960080603.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210627169 + 95452900 = 14513^2 + 9770^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-306080069 is a prime.

It is a super-2 number, since 2×306080069² = 187370017278089522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (306080039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153040034 + 153040035.

It is an arithmetic number, because the mean of its divisors is an integer number (153040035).

Almost surely, 2^306080069 is an apocalyptic number.

It is an amenable number.

306080069 is a deficient number, since it is larger than the sum of its proper divisors (1).

306080069 is an equidigital number, since it uses as much as digits as its factorization.

306080069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 306080069 is about 17495.1441548791. The cubic root of 306080069 is about 673.9251803465.

The spelling of 306080069 in words is "three hundred six million, eighty thousand, sixty-nine".