988770 has 32 divisors (see below), whose sum is σ = 2477952. Its totient is φ = 252032.

The previous prime is 988763. The next prime is 988783. The reversal of 988770 is 77889.

988770 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×988770² = 1955332225800, which contains 22 as substring.

It is a Curzon number.

It is a nialpdrome in base 10.

It is an unprimeable number.

988770 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27 + ... + 1406.

It is an arithmetic number, because the mean of its divisors is an integer number (77436).

2⁹⁸⁸⁷⁷⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 988770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1238976).

988770 is an abundant number, since it is smaller than the sum of its proper divisors (1489182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

988770 is a wasteful number, since it uses less digits than its factorization.

988770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1466.

The product of its (nonzero) digits is 28224, while the sum is 39.

The square root of 988770 is about 994.3691467458. The cubic root of 988770 is about 99.6242566040.

The spelling of 988770 in words is "nine hundred eighty-eight thousand, seven hundred seventy".