988866648 has 288 divisors, whose sum is σ = 3450807360. Its totient is φ = 252927360.

The previous prime is 988866643. The next prime is 988866673. The reversal of 988866648 is 846668889.

988866648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (988866643) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3220911 + ... + 3221217.

It is an arithmetic number, because the mean of its divisors is an integer number (11981970).

Almost surely, 2^988866648 is an apocalyptic number.

988866648 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 988866648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1725403680).

988866648 is an abundant number, since it is smaller than the sum of its proper divisors (2461940712).

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

988866648 is a wasteful number, since it uses less digits than its factorization.

988866648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427 (or 413 counting only the distinct ones).

The product of its digits is 31850496, while the sum is 63.

The square root of 988866648 is about 31446.2501421076. The cubic root of 988866648 is about 996.2750244524.

The spelling of 988866648 in words is "nine hundred eighty-eight million, eight hundred sixty-six thousand, six hundred forty-eight".