6668532 has 36 divisors (see below), whose sum is σ = 18154500. Its totient is φ = 2051712.

The previous prime is 6668531. The next prime is 6668537. The reversal of 6668532 is 2358666.

It can be written as a sum of positive squares in 2 ways, for example, as 2842596 + 3825936 = 1686^2 + 1956^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6668531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6657 + ... + 7592.

Almost surely, 2^6668532 is an apocalyptic number.

It is an amenable number.

6668532 is an abundant number, since it is smaller than the sum of its proper divisors (11485968).

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

6668532 is a wasteful number, since it uses less digits than its factorization.

6668532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14272 (or 14267 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 6668532 is about 2582.3500924545. The cubic root of 6668532 is about 188.2247575980.

The spelling of 6668532 in words is "six million, six hundred sixty-eight thousand, five hundred thirty-two".