731887697 has 2 divisors, whose sum is σ = 731887698. Its totient is φ = 731887696.

The previous prime is 731887631. The next prime is 731887729. The reversal of 731887697 is 796788137.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 687278656 + 44609041 = 26216^2 + 6679^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-731887697 is a prime.

It is not a weakly prime, because it can be changed into another prime (731887627) 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, 365943848 + 365943849.

It is an arithmetic number, because the mean of its divisors is an integer number (365943849).

Almost surely, 2^731887697 is an apocalyptic number.

It is an amenable number.

731887697 is a deficient number, since it is larger than the sum of its proper divisors (1).

731887697 is an equidigital number, since it uses as much as digits as its factorization.

731887697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3556224, while the sum is 56.

The square root of 731887697 is about 27053.4230181691. The cubic root of 731887697 is about 901.1867870276.

The spelling of 731887697 in words is "seven hundred thirty-one million, eight hundred eighty-seven thousand, six hundred ninety-seven".