33668660 has 12 divisors (see below), whose sum is σ = 70704228. Its totient is φ = 13467456.

The previous prime is 33668651. The next prime is 33668693. The reversal of 33668660 is 6686633.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17875984 + 15792676 = 4228^2 + 3974^2 .

It is a super-2 number, since 2×33668660² = 2267157332391200, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 841697 + ... + 841736.

It is an arithmetic number, because the mean of its divisors is an integer number (5892019).

Almost surely, 2^33668660 is an apocalyptic number.

It is an amenable number.

33668660 is an abundant number, since it is smaller than the sum of its proper divisors (37035568).

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

33668660 is a wasteful number, since it uses less digits than its factorization.

33668660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1683442 (or 1683440 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 38.

The square root of 33668660 is about 5802.4701636458. The cubic root of 33668660 is about 322.9053772999.

It can be divided in two parts, 3 and 3668660, that added together give a palindrome (3668663).

The spelling of 33668660 in words is "thirty-three million, six hundred sixty-eight thousand, six hundred sixty".