3012661 has 4 divisors (see below), whose sum is σ = 3028000. Its totient is φ = 2997324.

The previous prime is 3012649. The next prime is 3012683. The reversal of 3012661 is 1662103.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3012661 - 2⁵ = 3012629 is a prime.

It is a super-2 number, since 2×3012661² = 18152252601842, which contains 22 as substring.

It is a Duffinian number.

3012661 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3012641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7371 + ... + 7768.

It is an arithmetic number, because the mean of its divisors is an integer number (757000).

Almost surely, 2^3012661 is an apocalyptic number.

It is an amenable number.

3012661 is a deficient number, since it is larger than the sum of its proper divisors (15339).

3012661 is a wasteful number, since it uses less digits than its factorization.

3012661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15338.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 3012661 is about 1735.7018753231. The cubic root of 3012661 is about 144.4275647380.

Adding to 3012661 its reverse (1662103), we get a palindrome (4674764).

The spelling of 3012661 in words is "three million, twelve thousand, six hundred sixty-one".