3330661 has 4 divisors (see below), whose sum is σ = 3385324. Its totient is φ = 3276000.

The previous prime is 3330659. The next prime is 3330667. The reversal of 3330661 is 1660333.

3330661 = T₁₇₀ + T₁₇₁ + ... + T₂₉₁.

It is a happy number.

3330661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1660333 = 239 ⋅6947.

It can be written as a sum of positive squares in 2 ways, for example, as 112225 + 3218436 = 335^2 + 1794^2 .

It is a cyclic number.

It is not a de Polignac number, because 3330661 - 2¹ = 3330659 is a prime.

It is a super-2 number, since 2×3330661² = 22186605393842, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3330667) 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, 27240 + ... + 27361.

It is an arithmetic number, because the mean of its divisors is an integer number (846331).

Almost surely, 2^3330661 is an apocalyptic number.

It is an amenable number.

3330661 is a deficient number, since it is larger than the sum of its proper divisors (54663).

3330661 is an equidigital number, since it uses as much as digits as its factorization.

3330661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54662.

The product of its (nonzero) digits is 972, while the sum is 22.

The square root of 3330661 is about 1825.0098629870. The cubic root of 3330661 is about 149.3402281884.

Adding to 3330661 its reverse (1660333), we get a palindrome (4990994).

The spelling of 3330661 in words is "three million, three hundred thirty thousand, six hundred sixty-one".