698387243 has 2 divisors, whose sum is σ = 698387244. Its totient is φ = 698387242.

The previous prime is 698387227. The next prime is 698387257. The reversal of 698387243 is 342783896.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 698387243 - 2⁴ = 698387227 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 698387191 and 698387200.

It is not a weakly prime, because it can be changed into another prime (698387213) 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, 349193621 + 349193622.

It is an arithmetic number, because the mean of its divisors is an integer number (349193622).

Almost surely, 2^698387243 is an apocalyptic number.

698387243 is a deficient number, since it is larger than the sum of its proper divisors (1).

698387243 is an equidigital number, since it uses as much as digits as its factorization.

698387243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 50.

The square root of 698387243 is about 26427.0172929145. The cubic root of 698387243 is about 887.2215852997.

The spelling of 698387243 in words is "six hundred ninety-eight million, three hundred eighty-seven thousand, two hundred forty-three".