6633666 has 24 divisors (see below), whose sum is σ = 15479100. Its totient is φ = 2041056.

The previous prime is 6633661. The next prime is 6633667. The reversal of 6633666 is 6663366.

It can be written as a sum of positive squares in 2 ways, for example, as 5157441 + 1476225 = 2271^2 + 1215^2 .

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

It is a d-powerful number, because it can be written as 6² + 6³ + 3⁵ + 3¹³ + 6⁸ + 6⁸ + 6⁸ .

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 6633666.

It is not an unprimeable number, because it can be changed into a prime (6633661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13941 + ... + 14408.

Almost surely, 2^6633666 is an apocalyptic number.

6633666 is an abundant number, since it is smaller than the sum of its proper divisors (8845434).

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

6633666 is a wasteful number, since it uses less digits than its factorization.

6633666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28370 (or 28367 counting only the distinct ones).

The product of its digits is 69984, while the sum is 36.

The square root of 6633666 is about 2575.5904177489. The cubic root of 6633666 is about 187.8961437844.

The spelling of 6633666 in words is "six million, six hundred thirty-three thousand, six hundred sixty-six".