2985665 has 4 divisors (see below), whose sum is σ = 3582804. Its totient is φ = 2388528.

The previous prime is 2985629. The next prime is 2985667. The reversal of 2985665 is 5665892.

2985665 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.

It can be written as a sum of positive squares in 2 ways, for example, as 1168561 + 1817104 = 1081^2 + 1348^2 .

It is a cyclic number.

It is not a de Polignac number, because 2985665 - 2⁶ = 2985601 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (2985667) 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, 298562 + ... + 298571.

It is an arithmetic number, because the mean of its divisors is an integer number (895701).

2^2985665 is an apocalyptic number.

It is an amenable number.

2985665 is a deficient number, since it is larger than the sum of its proper divisors (597139).

2985665 is an equidigital number, since it uses as much as digits as its factorization.

2985665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597138.

The product of its digits is 129600, while the sum is 41.

The square root of 2985665 is about 1727.9076942939. The cubic root of 2985665 is about 143.9948718596.

The spelling of 2985665 in words is "two million, nine hundred eighty-five thousand, six hundred sixty-five".