698616321 has 16 divisors (see below), whose sum is σ = 1003691136. Its totient is φ = 429682176.

The previous prime is 698616311. The next prime is 698616323. The reversal of 698616321 is 123616896.

It is not a de Polignac number, because 698616321 - 2⁶ = 698616257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (698616323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90801 + ... + 98193.

It is an arithmetic number, because the mean of its divisors is an integer number (62730696).

Almost surely, 2^698616321 is an apocalyptic number.

It is an amenable number.

698616321 is a deficient number, since it is larger than the sum of its proper divisors (305074815).

698616321 is a wasteful number, since it uses less digits than its factorization.

698616321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9832.

The product of its digits is 93312, while the sum is 42.

The square root of 698616321 is about 26431.3511005397. The cubic root of 698616321 is about 887.3185805462.

The spelling of 698616321 in words is "six hundred ninety-eight million, six hundred sixteen thousand, three hundred twenty-one".