698785271 has 2 divisors, whose sum is σ = 698785272. Its totient is φ = 698785270.

The previous prime is 698785259. The next prime is 698785279. The reversal of 698785271 is 172587896.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 698785271 - 2¹⁴ = 698768887 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (698785279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349392635 + 349392636.

It is an arithmetic number, because the mean of its divisors is an integer number (349392636).

Almost surely, 2^698785271 is an apocalyptic number.

698785271 is a deficient number, since it is larger than the sum of its proper divisors (1).

698785271 is an equidigital number, since it uses as much as digits as its factorization.

698785271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1693440, while the sum is 53.

The square root of 698785271 is about 26434.5469225406. The cubic root of 698785271 is about 887.3901030623.

The spelling of 698785271 in words is "six hundred ninety-eight million, seven hundred eighty-five thousand, two hundred seventy-one".