698880321 has 6 divisors (see below), whose sum is σ = 1009493810. Its totient is φ = 465920208.

The previous prime is 698880289. The next prime is 698880359. The reversal of 698880321 is 123088896.

It can be written as a sum of positive squares in only one way, i.e., 698862096 + 18225 = 26436^2 + 135^2 .

It is not a de Polignac number, because 698880321 - 2⁵ = 698880289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (698880361) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38826676 + ... + 38826693.

Almost surely, 2^698880321 is an apocalyptic number.

It is an amenable number.

698880321 is a deficient number, since it is larger than the sum of its proper divisors (310613489).

698880321 is a wasteful number, since it uses less digits than its factorization.

698880321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77653375 (or 77653372 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 698880321 is about 26436.3446981613. The cubic root of 698880321 is about 887.4303360250.

The spelling of 698880321 in words is "six hundred ninety-eight million, eight hundred eighty thousand, three hundred twenty-one".