6661632 has 40 divisors (see below), whose sum is σ = 17751096. Its totient is φ = 2220032.

The previous prime is 6661601. The next prime is 6661643. The reversal of 6661632 is 2361666.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 6661632.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633 + ... + 3704.

Almost surely, 2^6661632 is an apocalyptic number.

It is an amenable number.

6661632 is an abundant number, since it is smaller than the sum of its proper divisors (11089464).

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

6661632 is an equidigital number, since it uses as much as digits as its factorization.

6661632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4358 (or 4342 counting only the distinct ones).

The product of its digits is 7776, while the sum is 30.

The square root of 6661632 is about 2581.0137543221. The cubic root of 6661632 is about 188.1598158173.

The spelling of 6661632 in words is "six million, six hundred sixty-one thousand, six hundred thirty-two".