698388789 has 8 divisors (see below), whose sum is σ = 1064211520. Its totient is φ = 399079296.

The previous prime is 698388763. The next prime is 698388797. The reversal of 698388789 is 987883896.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 698388789 - 2⁹ = 698388277 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 (698388749) 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, 16628284 + ... + 16628325.

It is an arithmetic number, because the mean of its divisors is an integer number (133026440).

Almost surely, 2^698388789 is an apocalyptic number.

It is an amenable number.

698388789 is a deficient number, since it is larger than the sum of its proper divisors (365822731).

698388789 is a wasteful number, since it uses less digits than its factorization.

698388789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33256619.

The product of its digits is 41803776, while the sum is 66.

The square root of 698388789 is about 26427.0465432670. The cubic root of 698388789 is about 887.2222399716. Note that the first 4 decimals are identical.

The spelling of 698388789 in words is "six hundred ninety-eight million, three hundred eighty-eight thousand, seven hundred eighty-nine".