33664864 has 12 divisors (see below), whose sum is σ = 66277764. Its totient is φ = 16832416.

The previous prime is 33664859. The next prime is 33664867. The reversal of 33664864 is 46846633.

It is a super-2 number, since 2×33664864² = 2266646136276992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33664867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525982 + ... + 526045.

It is an arithmetic number, because the mean of its divisors is an integer number (5523147).

Almost surely, 2^33664864 is an apocalyptic number.

It is an amenable number.

33664864 is a deficient number, since it is larger than the sum of its proper divisors (32612900).

33664864 is a wasteful number, since it uses less digits than its factorization.

33664864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052037 (or 1052029 counting only the distinct ones).

The product of its digits is 248832, while the sum is 40.

The square root of 33664864 is about 5802.1430523557. The cubic root of 33664864 is about 322.8932414354.

The spelling of 33664864 in words is "thirty-three million, six hundred sixty-four thousand, eight hundred sixty-four".