33666740 has 24 divisors (see below), whose sum is σ = 72426312. Its totient is φ = 13137920.

The previous prime is 33666739. The next prime is 33666761. The reversal of 33666740 is 4766633.

It can be written as a sum of positive squares in 4 ways, for example, as 1267876 + 32398864 = 1126^2 + 5692^2 .

It is a super-2 number, since 2×33666740² = 2266898764455200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33666740.

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 in 7 ways as a sum of consecutive naturals, for example, 19709 + ... + 21348.

It is an arithmetic number, because the mean of its divisors is an integer number (3017763).

Almost surely, 2^33666740 is an apocalyptic number.

It is an amenable number.

33666740 is an abundant number, since it is smaller than the sum of its proper divisors (38759572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33666740 is a wasteful number, since it uses less digits than its factorization.

33666740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41107 (or 41105 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 35.

The square root of 33666740 is about 5802.3047145078. The cubic root of 33666740 is about 322.8992391473.

It can be divided in two parts, 336 and 66740, that added together give a palindrome (67076).

The spelling of 33666740 in words is "thirty-three million, six hundred sixty-six thousand, seven hundred forty".