3066921 has 24 divisors (see below), whose sum is σ = 5206656. Its totient is φ = 1715040.

The previous prime is 3066911. The next prime is 3066971. The reversal of 3066921 is 1296603.

It is a happy number.

3066921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3066921 - 2⁶ = 3066857 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3066901) 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 23 ways as a sum of consecutive naturals, for example, 96 + ... + 2478.

It is an arithmetic number, because the mean of its divisors is an integer number (216944).

Almost surely, 2^3066921 is an apocalyptic number.

It is an amenable number.

3066921 is a deficient number, since it is larger than the sum of its proper divisors (2139735).

3066921 is a wasteful number, since it uses less digits than its factorization.

3066921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2413 (or 2410 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 3066921 is about 1751.2626873202. The cubic root of 3066921 is about 145.2894890375.

It can be divided in two parts, 306 and 6921, that added together give a palindrome (7227).

The spelling of 3066921 in words is "three million, sixty-six thousand, nine hundred twenty-one".