698459089 has 4 divisors (see below), whose sum is σ = 709909300. Its totient is φ = 687008880.

The previous prime is 698459063. The next prime is 698459131. The reversal of 698459089 is 980954896.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 86638864 + 611820225 = 9308^2 + 24735^2 .

It is a cyclic number.

It is not a de Polignac number, because 698459089 - 2⁷ = 698458961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (698459189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5725014 + ... + 5725135.

It is an arithmetic number, because the mean of its divisors is an integer number (177477325).

Almost surely, 2^698459089 is an apocalyptic number.

It is an amenable number.

698459089 is a deficient number, since it is larger than the sum of its proper divisors (11450211).

698459089 is a wasteful number, since it uses less digits than its factorization.

698459089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11450210.

The product of its (nonzero) digits is 5598720, while the sum is 58.

The square root of 698459089 is about 26428.3765865405. The cubic root of 698459089 is about 887.2520083145.

The spelling of 698459089 in words is "six hundred ninety-eight million, four hundred fifty-nine thousand, eighty-nine".