33664131 has 24 divisors (see below), whose sum is σ = 52344864. Its totient is φ = 20770560.

The previous prime is 33664129. The next prime is 33664139. The reversal of 33664131 is 13146633.

It is not a de Polignac number, because 33664131 - 2¹ = 33664129 is a prime.

It is a super-2 number, since 2×33664131² = 2266547431970322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33664095 and 33664104.

It is not an unprimeable number, because it can be changed into a prime (33664139) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7530 + ... + 11136.

It is an arithmetic number, because the mean of its divisors is an integer number (2181036).

Almost surely, 2^33664131 is an apocalyptic number.

33664131 is a deficient number, since it is larger than the sum of its proper divisors (18680733).

33664131 is a wasteful number, since it uses less digits than its factorization.

33664131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3691 (or 3688 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 33664131 is about 5802.0798856962. The cubic root of 33664131 is about 322.8908979192.

The spelling of 33664131 in words is "thirty-three million, six hundred sixty-four thousand, one hundred thirty-one".