986666688 has 168 divisors, whose sum is σ = 3263749632. Its totient is φ = 279148032.

The previous prime is 986666663. The next prime is 986666699. The reversal of 986666688 is 886666689.

It is a tau number, because it is divible by the number of its divisors (168).

It is a super-2 number, since 2×986666688² = 1947022306417778688, which contains 22 as substring.

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 an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 430281 + ... + 432567.

Almost surely, 2^986666688 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 986666688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1631874816).

986666688 is an abundant number, since it is smaller than the sum of its proper divisors (2277082944).

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

986666688 is a wasteful number, since it uses less digits than its factorization.

986666688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2419 (or 2406 counting only the distinct ones).

The product of its digits is 35831808, while the sum is 63.

The square root of 986666688 is about 31411.2509779537. The cubic root of 986666688 is about 995.5356620115.

Subtracting from 986666688 its reverse (886666689), we obtain a palindrome (99999999).

The spelling of 986666688 in words is "nine hundred eighty-six million, six hundred sixty-six thousand, six hundred eighty-eight".