988666536 has 128 divisors (see below), whose sum is σ = 2917232640. Its totient is φ = 275270400.

The previous prime is 988666531. The next prime is 988666537. The reversal of 988666536 is 635666889.

It is not an unprimeable number, because it can be changed into a prime (988666531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 929541 + ... + 930603.

It is an arithmetic number, because the mean of its divisors is an integer number (22790880).

Almost surely, 2^988666536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 988666536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1458616320).

988666536 is an abundant number, since it is smaller than the sum of its proper divisors (1928566104).

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

988666536 is a wasteful number, since it uses less digits than its factorization.

988666536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367 (or 1363 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 57.

The square root of 988666536 is about 31443.0681709022. The cubic root of 988666536 is about 996.2078161866.

The spelling of 988666536 in words is "nine hundred eighty-eight million, six hundred sixty-six thousand, five hundred thirty-six".