6669984 has 96 divisors (see below), whose sum is σ = 19123776. Its totient is φ = 2027520.

The previous prime is 6669983. The next prime is 6670019. The reversal of 6669984 is 4899666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (6669983) 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, 99519 + ... + 99585.

It is an arithmetic number, because the mean of its divisors is an integer number (199206).

Almost surely, 2^6669984 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 6669984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9561888).

6669984 is an abundant number, since it is smaller than the sum of its proper divisors (12453792).

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

6669984 is a wasteful number, since it uses less digits than its factorization.

6669984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 150 counting only the distinct ones).

The product of its digits is 559872, while the sum is 48.

The square root of 6669984 is about 2582.6312164148. The cubic root of 6669984 is about 188.2384179016.

The spelling of 6669984 in words is "six million, six hundred sixty-nine thousand, nine hundred eighty-four".