788320609 has 2 divisors, whose sum is σ = 788320610. Its totient is φ = 788320608.

The previous prime is 788320579. The next prime is 788320619. The reversal of 788320609 is 906023887.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 552391009 + 235929600 = 23503^2 + 15360^2 .

It is a cyclic number.

It is not a de Polignac number, because 788320609 - 2²⁹ = 251449697 is a prime.

It is not a weakly prime, because it can be changed into another prime (788320619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 394160304 + 394160305.

It is an arithmetic number, because the mean of its divisors is an integer number (394160305).

Almost surely, 2^788320609 is an apocalyptic number.

It is an amenable number.

788320609 is a deficient number, since it is larger than the sum of its proper divisors (1).

788320609 is an equidigital number, since it uses as much as digits as its factorization.

788320609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 788320609 is about 28077.0477258561. The cubic root of 788320609 is about 923.7780246911.

The spelling of 788320609 in words is "seven hundred eighty-eight million, three hundred twenty thousand, six hundred nine".