696520822009 has 2 divisors, whose sum is σ = 696520822010. Its totient is φ = 696520822008.

The previous prime is 696520821947. The next prime is 696520822021. The reversal of 696520822009 is 900228025696.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 678312018409 + 18208803600 = 823597^2 + 134940^2 .

It is a cyclic number.

It is not a de Polignac number, because 696520822009 - 2¹⁵ = 696520789241 is a prime.

It is not a weakly prime, because it can be changed into another prime (696520822609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348260411004 + 348260411005.

It is an arithmetic number, because the mean of its divisors is an integer number (348260411005).

Almost surely, 2^696520822009 is an apocalyptic number.

It is an amenable number.

696520822009 is a deficient number, since it is larger than the sum of its proper divisors (1).

696520822009 is an equidigital number, since it uses as much as digits as its factorization.

696520822009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 696520822009 in words is "six hundred ninety-six billion, five hundred twenty million, eight hundred twenty-two thousand, nine".