33664156 has 12 divisors (see below), whose sum is σ = 58954392. Its totient is φ = 16820048.

The previous prime is 33664151. The next prime is 33664159. The reversal of 33664156 is 65146633.

It is a super-2 number, since 2×33664156² = 2266550798384672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33664151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6951 + ... + 10753.

It is an arithmetic number, because the mean of its divisors is an integer number (4912866).

Almost surely, 2^33664156 is an apocalyptic number.

It is an amenable number.

33664156 is a deficient number, since it is larger than the sum of its proper divisors (25290236).

33664156 is a wasteful number, since it uses less digits than its factorization.

33664156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6020 (or 6018 counting only the distinct ones).

The product of its digits is 38880, while the sum is 34.

The square root of 33664156 is about 5802.0820400956. The cubic root of 33664156 is about 322.8909778487.

The spelling of 33664156 in words is "thirty-three million, six hundred sixty-four thousand, one hundred fifty-six".