696223309 has 2 divisors, whose sum is σ = 696223310. Its totient is φ = 696223308.

The previous prime is 696223291. The next prime is 696223313. The reversal of 696223309 is 903322696.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 480574084 + 215649225 = 21922^2 + 14685^2 .

It is a cyclic number.

It is not a de Polignac number, because 696223309 - 2⁷ = 696223181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (696223109) 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, 348111654 + 348111655.

It is an arithmetic number, because the mean of its divisors is an integer number (348111655).

Almost surely, 2^696223309 is an apocalyptic number.

It is an amenable number.

696223309 is a deficient number, since it is larger than the sum of its proper divisors (1).

696223309 is an equidigital number, since it uses as much as digits as its factorization.

696223309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 40.

The square root of 696223309 is about 26386.0438300250. The cubic root of 696223309 is about 886.3042932091.

The spelling of 696223309 in words is "six hundred ninety-six million, two hundred twenty-three thousand, three hundred nine".