33325664 has 12 divisors (see below), whose sum is σ = 65609964. Its totient is φ = 16662816.

The previous prime is 33325609. The next prime is 33325673. The reversal of 33325664 is 46652333.

It is a super-2 number, since 2×33325664² = 2221199762081792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 1041427 = 33325664 / (3 + 3 + 3 + 2 + 5 + 6 + 6 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 33325664.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 520682 + ... + 520745.

It is an arithmetic number, because the mean of its divisors is an integer number (5467497).

Almost surely, 2^33325664 is an apocalyptic number.

It is an amenable number.

33325664 is a deficient number, since it is larger than the sum of its proper divisors (32284300).

33325664 is a wasteful number, since it uses less digits than its factorization.

33325664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041437 (or 1041429 counting only the distinct ones).

The product of its digits is 38880, while the sum is 32.

The square root of 33325664 is about 5772.8384699383. The cubic root of 33325664 is about 321.8051107756.

Adding to 33325664 its reverse (46652333), we get a palindrome (79977997).

The spelling of 33325664 in words is "thirty-three million, three hundred twenty-five thousand, six hundred sixty-four".