3099661 has 4 divisors (see below), whose sum is σ = 3282012. Its totient is φ = 2917312.

The previous prime is 3099623. The next prime is 3099667. The reversal of 3099661 is 1669903.

3099661 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: 1669903 = 251 ⋅6653.

It can be written as a sum of positive squares in 2 ways, for example, as 2910436 + 189225 = 1706^2 + 435^2 .

It is a cyclic number.

It is not a de Polignac number, because 3099661 - 2¹⁹ = 2575373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3099667) 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, 91150 + ... + 91183.

It is an arithmetic number, because the mean of its divisors is an integer number (820503).

Almost surely, 2^3099661 is an apocalyptic number.

It is an amenable number.

3099661 is a deficient number, since it is larger than the sum of its proper divisors (182351).

3099661 is a wasteful number, since it uses less digits than its factorization.

3099661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182350.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 3099661 is about 1760.5854140030. The cubic root of 3099661 is about 145.8046583802.

The spelling of 3099661 in words is "three million, ninety-nine thousand, six hundred sixty-one".