698236389 has 8 divisors (see below), whose sum is σ = 1034424320. Its totient is φ = 465490908.

The previous prime is 698236373. The next prime is 698236397. The reversal of 698236389 is 983632896.

It is not a de Polignac number, because 698236389 - 2⁴ = 698236373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (698236309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12930277 + ... + 12930330.

It is an arithmetic number, because the mean of its divisors is an integer number (129303040).

Almost surely, 2^698236389 is an apocalyptic number.

It is an amenable number.

698236389 is a deficient number, since it is larger than the sum of its proper divisors (336187931).

698236389 is a wasteful number, since it uses less digits than its factorization.

698236389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25860616 (or 25860610 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 54.

The square root of 698236389 is about 26424.1629763366. The cubic root of 698236389 is about 887.1576997480.

The spelling of 698236389 in words is "six hundred ninety-eight million, two hundred thirty-six thousand, three hundred eighty-nine".