33243666 has 8 divisors (see below), whose sum is σ = 66487344. Its totient is φ = 11081220.

The previous prime is 33243643. The next prime is 33243677. The reversal of 33243666 is 66634233.

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

33243666 is an admirable number.

It is a super-2 number, since 2×33243666² = 2210282658239112, which contains 22 as substring.

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, 2770300 + ... + 2770311.

It is an arithmetic number, because the mean of its divisors is an integer number (8310918).

Almost surely, 2^33243666 is an apocalyptic number.

33243666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

33243666 is a wasteful number, since it uses less digits than its factorization.

33243666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5540616.

The product of its digits is 46656, while the sum is 33.

The square root of 33243666 is about 5765.7320437218. The cubic root of 33243666 is about 321.5409595276.

Adding to 33243666 its reverse (66634233), we get a palindrome (99877899).

The spelling of 33243666 in words is "thirty-three million, two hundred forty-three thousand, six hundred sixty-six".