307640713 has 2 divisors, whose sum is σ = 307640714. Its totient is φ = 307640712.

The previous prime is 307640699. The next prime is 307640719. The reversal of 307640713 is 317046703.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198584464 + 109056249 = 14092^2 + 10443^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-307640713 is a prime.

It is not a weakly prime, because it can be changed into another prime (307640719) by changing a digit.

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 as a sum of consecutive naturals, namely, 153820356 + 153820357.

It is an arithmetic number, because the mean of its divisors is an integer number (153820357).

Almost surely, 2^307640713 is an apocalyptic number.

It is an amenable number.

307640713 is a deficient number, since it is larger than the sum of its proper divisors (1).

307640713 is an equidigital number, since it uses as much as digits as its factorization.

307640713 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 31.

The square root of 307640713 is about 17539.6896494778. The cubic root of 307640713 is about 675.0686445050.

The spelling of 307640713 in words is "three hundred seven million, six hundred forty thousand, seven hundred thirteen".