988617864 has 64 divisors (see below), whose sum is σ = 2818247040. Its totient is φ = 286295040.

The previous prime is 988617863. The next prime is 988617907. The reversal of 988617864 is 468716889.

988617864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (988617863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87892 + ... + 98499.

It is an arithmetic number, because the mean of its divisors is an integer number (44035110).

Almost surely, 2^988617864 is an apocalyptic number.

It is an amenable number.

988617864 is an abundant number, since it is smaller than the sum of its proper divisors (1829629176).

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

988617864 is a wasteful number, since it uses less digits than its factorization.

988617864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186430 (or 186426 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 57.

The square root of 988617864 is about 31442.2941911051. The cubic root of 988617864 is about 996.1914681661.

The spelling of 988617864 in words is "nine hundred eighty-eight million, six hundred seventeen thousand, eight hundred sixty-four".