988805 has 8 divisors (see below), whose sum is σ = 1256472. Its totient is φ = 744448.

The previous prime is 988789. The next prime is 988829. The reversal of 988805 is 508889.

988805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 279841 + 708964 = 529^2 + 842^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 988805 - 2⁴ = 988789 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 988805.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5732 + ... + 5901.

It is an arithmetic number, because the mean of its divisors is an integer number (157059).

2⁹⁸⁸⁸⁰⁵ is an apocalyptic number.

It is an amenable number.

988805 is a deficient number, since it is larger than the sum of its proper divisors (267667).

988805 is a wasteful number, since it uses less digits than its factorization.

988805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11655.

The product of its (nonzero) digits is 23040, while the sum is 38.

The square root of 988805 is about 994.3867456880. The cubic root of 988805 is about 99.6254320738.

The spelling of 988805 in words is "nine hundred eighty-eight thousand, eight hundred five".