768064009 has 2 divisors, whose sum is σ = 768064010. Its totient is φ = 768064008.

The previous prime is 768063997. The next prime is 768064039. The reversal of 768064009 is 900460867.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 750924409 + 17139600 = 27403^2 + 4140^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-768064009 is a prime.

It is not a weakly prime, because it can be changed into another prime (768064039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384032004 + 384032005.

It is an arithmetic number, because the mean of its divisors is an integer number (384032005).

Almost surely, 2^768064009 is an apocalyptic number.

It is an amenable number.

768064009 is a deficient number, since it is larger than the sum of its proper divisors (1).

768064009 is an equidigital number, since it uses as much as digits as its factorization.

768064009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 768064009 is about 27713.9677599582. The cubic root of 768064009 is about 915.7968350074.

The spelling of 768064009 in words is "seven hundred sixty-eight million, sixty-four thousand, nine".