696729641 has 2 divisors, whose sum is σ = 696729642. Its totient is φ = 696729640.

The previous prime is 696729629. The next prime is 696729659. The reversal of 696729641 is 146927696.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 349690000 + 347039641 = 18700^2 + 18629^2 .

It is a cyclic number.

It is not a de Polignac number, because 696729641 - 2²⁶ = 629620777 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 696729641.

It is not a weakly prime, because it can be changed into another prime (696729661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348364820 + 348364821.

It is an arithmetic number, because the mean of its divisors is an integer number (348364821).

Almost surely, 2^696729641 is an apocalyptic number.

It is an amenable number.

696729641 is a deficient number, since it is larger than the sum of its proper divisors (1).

696729641 is an equidigital number, since it uses as much as digits as its factorization.

696729641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 50.

The square root of 696729641 is about 26395.6367795892. The cubic root of 696729641 is about 886.5190976044.

The spelling of 696729641 in words is "six hundred ninety-six million, seven hundred twenty-nine thousand, six hundred forty-one".