33621164 has 12 divisors (see below), whose sum is σ = 59039904. Its totient is φ = 16752624.

The previous prime is 33621163. The next prime is 33621169. The reversal of 33621164 is 46112633.

It is a super-2 number, since 2×33621164² = 2260765337429792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33621163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13172 + ... + 15515.

It is an arithmetic number, because the mean of its divisors is an integer number (4919992).

Almost surely, 2^33621164 is an apocalyptic number.

It is an amenable number.

33621164 is a deficient number, since it is larger than the sum of its proper divisors (25418740).

33621164 is a wasteful number, since it uses less digits than its factorization.

33621164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28984 (or 28982 counting only the distinct ones).

The product of its digits is 2592, while the sum is 26.

The square root of 33621164 is about 5798.3759795308. The cubic root of 33621164 is about 322.7534661830.

Adding to 33621164 its reverse (46112633), we get a palindrome (79733797).

The spelling of 33621164 in words is "thirty-three million, six hundred twenty-one thousand, one hundred sixty-four".