988597664 has 48 divisors (see below), whose sum is σ = 2059706880. Its totient is φ = 465776640.

The previous prime is 988597637. The next prime is 988597669. The reversal of 988597664 is 466795889.

It is a junction number, because it is equal to n+sod(n) for n = 988597597 and 988597606.

It is not an unprimeable number, because it can be changed into a prime (988597669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111872 + ... + 120384.

It is an arithmetic number, because the mean of its divisors is an integer number (42910560).

Almost surely, 2^988597664 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 988597664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1029853440).

988597664 is an abundant number, since it is smaller than the sum of its proper divisors (1071109216).

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

988597664 is a wasteful number, since it uses less digits than its factorization.

988597664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8733 (or 8725 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 62.

The square root of 988597664 is about 31441.9729660847. The cubic root of 988597664 is about 996.1846832038.

The spelling of 988597664 in words is "nine hundred eighty-eight million, five hundred ninety-seven thousand, six hundred sixty-four".