988556 has 12 divisors (see below), whose sum is σ = 1762992. Its totient is φ = 484848.

The previous prime is 988549. The next prime is 988571. The reversal of 988556 is 655889.

988556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

988556 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 3 ways as a sum of consecutive naturals, for example, 2120 + ... + 2543.

It is an arithmetic number, because the mean of its divisors is an integer number (146916).

2⁹⁸⁸⁵⁵⁶ is an apocalyptic number.

It is an amenable number.

988556 is a deficient number, since it is larger than the sum of its proper divisors (774436).

988556 is a wasteful number, since it uses less digits than its factorization.

988556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4720 (or 4718 counting only the distinct ones).

The product of its digits is 86400, while the sum is 41.

The square root of 988556 is about 994.2615350098. The cubic root of 988556 is about 99.6170688423.

The spelling of 988556 in words is "nine hundred eighty-eight thousand, five hundred fifty-six".