6661333 has 8 divisors (see below), whose sum is σ = 7631360. Its totient is φ = 5695920.

The previous prime is 6661327. The next prime is 6661337. The reversal of 6661333 is 3331666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6661333 - 2⁵ = 6661301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6661337) 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, 2908 + ... + 4666.

It is an arithmetic number, because the mean of its divisors is an integer number (953920).

Almost surely, 2^6661333 is an apocalyptic number.

It is an amenable number.

6661333 is a deficient number, since it is larger than the sum of its proper divisors (970027).

6661333 is a wasteful number, since it uses less digits than its factorization.

6661333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2307.

The product of its digits is 5832, while the sum is 28.

The square root of 6661333 is about 2580.9558306953. The cubic root of 6661333 is about 188.1570006600.

Adding to 6661333 its reverse (3331666), we get a palindrome (9992999).

It can be divided in two parts, 666 and 1333, that multiplied together give a triangular number (887778 = T₁₃₃₂).

The spelling of 6661333 in words is "six million, six hundred sixty-one thousand, three hundred thirty-three".