698319609 has 16 divisors (see below), whose sum is σ = 1035062784. Its totient is φ = 415872000.

The previous prime is 698319599. The next prime is 698319619. The reversal of 698319609 is 906913896.

It is an interprime number because it is at equal distance from previous prime (698319599) and next prime (698319619).

It is not a de Polignac number, because 698319609 - 2⁴ = 698319593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (698319619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 287592 + ... + 290009.

It is an arithmetic number, because the mean of its divisors is an integer number (64691424).

Almost surely, 2^698319609 is an apocalyptic number.

It is an amenable number.

698319609 is a deficient number, since it is larger than the sum of its proper divisors (336743175).

698319609 is a wasteful number, since it uses less digits than its factorization.

698319609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577648.

The product of its (nonzero) digits is 629856, while the sum is 51.

The square root of 698319609 is about 26425.7376245205. The cubic root of 698319609 is about 887.1929439394.

The spelling of 698319609 in words is "six hundred ninety-eight million, three hundred nineteen thousand, six hundred nine".