696287729 has 2 divisors, whose sum is σ = 696287730. Its totient is φ = 696287728.

The previous prime is 696287689. The next prime is 696287759. The reversal of 696287729 is 927782696.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 472845025 + 223442704 = 21745^2 + 14948^2 .

It is a cyclic number.

It is not a de Polignac number, because 696287729 - 2²⁸ = 427852273 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (696287759) 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, 348143864 + 348143865.

It is an arithmetic number, because the mean of its divisors is an integer number (348143865).

Almost surely, 2^696287729 is an apocalyptic number.

It is an amenable number.

696287729 is a deficient number, since it is larger than the sum of its proper divisors (1).

696287729 is an equidigital number, since it uses as much as digits as its factorization.

696287729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4572288, while the sum is 56.

The square root of 696287729 is about 26387.2645228716. The cubic root of 696287729 is about 886.3316282902.

The spelling of 696287729 in words is "six hundred ninety-six million, two hundred eighty-seven thousand, seven hundred twenty-nine".