768030209 has 2 divisors, whose sum is σ = 768030210. Its totient is φ = 768030208.

The previous prime is 768030203. The next prime is 768030227. The reversal of 768030209 is 902030867.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 600250000 + 167780209 = 24500^2 + 12953^2 .

It is an emirp because it is prime and its reverse (902030867) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-768030209 is a prime.

It is not a weakly prime, because it can be changed into another prime (768030203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384015104 + 384015105.

It is an arithmetic number, because the mean of its divisors is an integer number (384015105).

Almost surely, 2^768030209 is an apocalyptic number.

It is an amenable number.

768030209 is a deficient number, since it is larger than the sum of its proper divisors (1).

768030209 is an equidigital number, since it uses as much as digits as its factorization.

768030209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 768030209 is about 27713.3579524387. The cubic root of 768030209 is about 915.7834010632.

The spelling of 768030209 in words is "seven hundred sixty-eight million, thirty thousand, two hundred nine".