789888561 has 64 divisors (see below), whose sum is σ = 1410379776. Its totient is φ = 380620800.

The previous prime is 789888553. The next prime is 789888569. The reversal of 789888561 is 165888987.

It is an interprime number because it is at equal distance from previous prime (789888553) and next prime (789888569).

It is not a de Polignac number, because 789888561 - 2³ = 789888553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 789888495 and 789888504.

It is not an unprimeable number, because it can be changed into a prime (789888569) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 277401 + ... + 280233.

It is an arithmetic number, because the mean of its divisors is an integer number (22037184).

Almost surely, 2^789888561 is an apocalyptic number.

789888561 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

789888561 is a deficient number, since it is larger than the sum of its proper divisors (620491215).

789888561 is a wasteful number, since it uses less digits than its factorization.

789888561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2942.

The product of its digits is 7741440, while the sum is 60.

The square root of 789888561 is about 28104.9561643494. The cubic root of 789888561 is about 924.3900770042.

The spelling of 789888561 in words is "seven hundred eighty-nine million, eight hundred eighty-eight thousand, five hundred sixty-one".