3081609 has 12 divisors (see below), whose sum is σ = 4645056. Its totient is φ = 1964952.

The previous prime is 3081599. The next prime is 3081643. The reversal of 3081609 is 9061803.

It is not a de Polignac number, because 3081609 - 2⁵ = 3081577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3081809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7237 + ... + 7650.

It is an arithmetic number, because the mean of its divisors is an integer number (387088).

Almost surely, 2^3081609 is an apocalyptic number.

It is an amenable number.

3081609 is a deficient number, since it is larger than the sum of its proper divisors (1563447).

3081609 is a wasteful number, since it uses less digits than its factorization.

3081609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14916 (or 14913 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 3081609 is about 1755.4512240447. The cubic root of 3081609 is about 145.5210583472.

The spelling of 3081609 in words is "three million, eighty-one thousand, six hundred nine".