698880289 has 2 divisors, whose sum is σ = 698880290. Its totient is φ = 698880288.

The previous prime is 698880263. The next prime is 698880359. The reversal of 698880289 is 982088896.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 514382400 + 184497889 = 22680^2 + 13583^2 .

It is a cyclic number.

It is not a de Polignac number, because 698880289 - 2¹¹ = 698878241 is a prime.

It is not a weakly prime, because it can be changed into another prime (698880229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349440144 + 349440145.

It is an arithmetic number, because the mean of its divisors is an integer number (349440145).

Almost surely, 2^698880289 is an apocalyptic number.

It is an amenable number.

698880289 is a deficient number, since it is larger than the sum of its proper divisors (1).

698880289 is an equidigital number, since it uses as much as digits as its factorization.

698880289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3981312, while the sum is 58.

The square root of 698880289 is about 26436.3440929339. The cubic root of 698880289 is about 887.4303224806.

The spelling of 698880289 in words is "six hundred ninety-eight million, eight hundred eighty thousand, two hundred eighty-nine".