988564 has 6 divisors (see below), whose sum is σ = 1729994. Its totient is φ = 494280.

The previous prime is 988549. The next prime is 988571. The reversal of 988564 is 465889.

988564 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 only one way, i.e., 980100 + 8464 = 990^2 + 92^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123567 + ... + 123574.

2⁹⁸⁸⁵⁶⁴ is an apocalyptic number.

It is an amenable number.

988564 is a deficient number, since it is larger than the sum of its proper divisors (741430).

988564 is a wasteful number, since it uses less digits than its factorization.

988564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247145 (or 247143 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The square root of 988564 is about 994.2655580880. The cubic root of 988564 is about 99.6173375624.

The spelling of 988564 in words is "nine hundred eighty-eight thousand, five hundred sixty-four".