6669648 has 40 divisors (see below), whose sum is σ = 19145600. Its totient is φ = 2223072.

The previous prime is 6669647. The next prime is 6669653. The reversal of 6669648 is 8469666.

6669648 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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 (6669643) 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, 7288 + ... + 8151.

It is an arithmetic number, because the mean of its divisors is an integer number (478640).

Almost surely, 2^6669648 is an apocalyptic number.

It is an amenable number.

6669648 is an abundant number, since it is smaller than the sum of its proper divisors (12475952).

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

6669648 is a wasteful number, since it uses less digits than its factorization.

6669648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15456 (or 15444 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 6669648 is about 2582.5661656577. The cubic root of 6669648 is about 188.2352570159.

The spelling of 6669648 in words is "six million, six hundred sixty-nine thousand, six hundred forty-eight".