698659249 has 2 divisors, whose sum is σ = 698659250. Its totient is φ = 698659248.

The previous prime is 698659231. The next prime is 698659321. The reversal of 698659249 is 942956896.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 689850225 + 8809024 = 26265^2 + 2968^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-698659249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 698659193 and 698659202.

It is not a weakly prime, because it can be changed into another prime (698659219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349329624 + 349329625.

It is an arithmetic number, because the mean of its divisors is an integer number (349329625).

Almost surely, 2^698659249 is an apocalyptic number.

It is an amenable number.

698659249 is a deficient number, since it is larger than the sum of its proper divisors (1).

698659249 is an equidigital number, since it uses as much as digits as its factorization.

698659249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8398080, while the sum is 58.

The square root of 698659249 is about 26432.1631540061. The cubic root of 698659249 is about 887.3367545810.

The spelling of 698659249 in words is "six hundred ninety-eight million, six hundred fifty-nine thousand, two hundred forty-nine".