698236397 has 2 divisors, whose sum is σ = 698236398. Its totient is φ = 698236396.

The previous prime is 698236373. The next prime is 698236403. The reversal of 698236397 is 793632896.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 610139401 + 88096996 = 24701^2 + 9386^2 .

It is a cyclic number.

It is not a de Polignac number, because 698236397 - 2¹⁴ = 698220013 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (698236307) 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, 349118198 + 349118199.

It is an arithmetic number, because the mean of its divisors is an integer number (349118199).

Almost surely, 2^698236397 is an apocalyptic number.

It is an amenable number.

698236397 is a deficient number, since it is larger than the sum of its proper divisors (1).

698236397 is an equidigital number, since it uses as much as digits as its factorization.

698236397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2939328, while the sum is 53.

The square root of 698236397 is about 26424.1631277132. The cubic root of 698236397 is about 887.1577031362.

The spelling of 698236397 in words is "six hundred ninety-eight million, two hundred thirty-six thousand, three hundred ninety-seven".