698673289 has 2 divisors, whose sum is σ = 698673290. Its totient is φ = 698673288.

The previous prime is 698673281. The next prime is 698673341. The reversal of 698673289 is 982376896.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 552626064 + 146047225 = 23508^2 + 12085^2 .

It is a cyclic number.

It is not a de Polignac number, because 698673289 - 2³ = 698673281 is a prime.

It is not a weakly prime, because it can be changed into another prime (698673281) 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, 349336644 + 349336645.

It is an arithmetic number, because the mean of its divisors is an integer number (349336645).

Almost surely, 2^698673289 is an apocalyptic number.

It is an amenable number.

698673289 is a deficient number, since it is larger than the sum of its proper divisors (1).

698673289 is an equidigital number, since it uses as much as digits as its factorization.

698673289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7838208, while the sum is 58.

The square root of 698673289 is about 26432.4287381996. The cubic root of 698673289 is about 887.3426984058.

The spelling of 698673289 in words is "six hundred ninety-eight million, six hundred seventy-three thousand, two hundred eighty-nine".