698520073 has 2 divisors, whose sum is σ = 698520074. Its totient is φ = 698520072.

The previous prime is 698520061. The next prime is 698520131. The reversal of 698520073 is 370025896.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 380718144 + 317801929 = 19512^2 + 17827^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-698520073 is a prime.

It is not a weakly prime, because it can be changed into another prime (698520673) 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, 349260036 + 349260037.

It is an arithmetic number, because the mean of its divisors is an integer number (349260037).

Almost surely, 2^698520073 is an apocalyptic number.

It is an amenable number.

698520073 is a deficient number, since it is larger than the sum of its proper divisors (1).

698520073 is an equidigital number, since it uses as much as digits as its factorization.

698520073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 698520073 is about 26429.5303212146. The cubic root of 698520073 is about 887.2778302047.

The spelling of 698520073 in words is "six hundred ninety-eight million, five hundred twenty thousand, seventy-three".