696323561 has 2 divisors, whose sum is σ = 696323562. Its totient is φ = 696323560.

The previous prime is 696323539. The next prime is 696323591. The reversal of 696323561 is 165323696.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 644195161 + 52128400 = 25381^2 + 7220^2 .

It is a cyclic number.

It is not a de Polignac number, because 696323561 - 2¹⁰ = 696322537 is a prime.

It is not a weakly prime, because it can be changed into another prime (696323531) 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, 348161780 + 348161781.

It is an arithmetic number, because the mean of its divisors is an integer number (348161781).

Almost surely, 2^696323561 is an apocalyptic number.

It is an amenable number.

696323561 is a deficient number, since it is larger than the sum of its proper divisors (1).

696323561 is an equidigital number, since it uses as much as digits as its factorization.

696323561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174960, while the sum is 41.

The square root of 696323561 is about 26387.9434780356. The cubic root of 696323561 is about 886.3468320097.

The spelling of 696323561 in words is "six hundred ninety-six million, three hundred twenty-three thousand, five hundred sixty-one".