768226309 has 2 divisors, whose sum is σ = 768226310. Its totient is φ = 768226308.

The previous prime is 768226273. The next prime is 768226343. The reversal of 768226309 is 903622867.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 767123809 + 1102500 = 27697^2 + 1050^2 .

It is a cyclic number.

It is not a de Polignac number, because 768226309 - 2⁹ = 768225797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (768226399) 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, 384113154 + 384113155.

It is an arithmetic number, because the mean of its divisors is an integer number (384113155).

Almost surely, 2^768226309 is an apocalyptic number.

It is an amenable number.

768226309 is a deficient number, since it is larger than the sum of its proper divisors (1).

768226309 is an equidigital number, since it uses as much as digits as its factorization.

768226309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 768226309 is about 27716.8957316652. The cubic root of 768226309 is about 915.8613362974.

The spelling of 768226309 in words is "seven hundred sixty-eight million, two hundred twenty-six thousand, three hundred nine".