33668545 has 4 divisors (see below), whose sum is σ = 40402260. Its totient is φ = 26934832.

The previous prime is 33668543. The next prime is 33668563. The reversal of 33668545 is 54586633.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8105409 + 25563136 = 2847^2 + 5056^2 .

It is a cyclic number.

It is not a de Polignac number, because 33668545 - 2¹ = 33668543 is a prime.

It is a super-2 number, since 2×33668545² = 2267141844834050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 33668498 and 33668507.

It is not an unprimeable number, because it can be changed into a prime (33668543) by changing a digit.

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, 3366850 + ... + 3366859.

It is an arithmetic number, because the mean of its divisors is an integer number (10100565).

Almost surely, 2^33668545 is an apocalyptic number.

It is an amenable number.

33668545 is a deficient number, since it is larger than the sum of its proper divisors (6733715).

33668545 is an equidigital number, since it uses as much as digits as its factorization.

33668545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6733714.

The product of its digits is 259200, while the sum is 40.

The square root of 33668545 is about 5802.4602540646. The cubic root of 33668545 is about 322.9050096567.

It can be divided in two parts, 3366 and 8545, that added together give a palindrome (11911).

The spelling of 33668545 in words is "thirty-three million, six hundred sixty-eight thousand, five hundred forty-five".