6665632 has 24 divisors (see below), whose sum is σ = 13896036. Its totient is φ = 3136512.

The previous prime is 6665627. The next prime is 6665639. The reversal of 6665632 is 2365666.

It can be written as a sum of positive squares in 2 ways, for example, as 6533136 + 132496 = 2556^2 + 364^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (6665639) 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 3 ways as a sum of consecutive naturals, for example, 5583 + ... + 6670.

Almost surely, 2^6665632 is an apocalyptic number.

It is an amenable number.

6665632 is an abundant number, since it is smaller than the sum of its proper divisors (7230404).

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

6665632 is a wasteful number, since it uses less digits than its factorization.

6665632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12280 (or 12272 counting only the distinct ones).

The product of its digits is 38880, while the sum is 34.

The square root of 6665632 is about 2581.7885273585. The cubic root of 6665632 is about 188.1974686863.

Adding to 6665632 its sum of digits (34), we get a palindrome (6665666).

The spelling of 6665632 in words is "six million, six hundred sixty-five thousand, six hundred thirty-two".