698344009 has 12 divisors (see below), whose sum is σ = 796399632. Its totient is φ = 607250600.

The previous prime is 698343991. The next prime is 698344019. The reversal of 698344009 is 900443896.

It is not a de Polignac number, because 698344009 - 2¹⁵ = 698311241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (698344019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54187 + ... + 65824.

It is an arithmetic number, because the mean of its divisors is an integer number (66366636).

Almost surely, 2^698344009 is an apocalyptic number.

It is an amenable number.

698344009 is a deficient number, since it is larger than the sum of its proper divisors (98055623).

698344009 is a wasteful number, since it uses less digits than its factorization.

698344009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120068 (or 120045 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 698344009 is about 26426.1992916121. The cubic root of 698344009 is about 887.2032769614.

The spelling of 698344009 in words is "six hundred ninety-eight million, three hundred forty-four thousand, nine".