3109665 has 32 divisors (see below), whose sum is σ = 5515776. Its totient is φ = 1486080.

The previous prime is 3109651. The next prime is 3109681. The reversal of 3109665 is 5669013.

It is a happy number.

It is not a de Polignac number, because 3109665 - 2⁴ = 3109649 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7000 + ... + 7430.

It is an arithmetic number, because the mean of its divisors is an integer number (172368).

Almost surely, 2^3109665 is an apocalyptic number.

It is an amenable number.

3109665 is a deficient number, since it is larger than the sum of its proper divisors (2406111).

3109665 is a wasteful number, since it uses less digits than its factorization.

3109665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 3109665 is about 1763.4242257608. The cubic root of 3109665 is about 145.9613489981.

The spelling of 3109665 in words is "three million, one hundred nine thousand, six hundred sixty-five".