2661105 has 16 divisors (see below), whose sum is σ = 4362624. Its totient is φ = 1384320.

The previous prime is 2661103. The next prime is 2661107. The reversal of 2661105 is 5011662.

It is a happy number.

2661105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2661103) and next prime (2661107).

It is not a de Polignac number, because 2661105 - 2¹ = 2661103 is a prime.

2661105 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2661103) 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 15 ways as a sum of consecutive naturals, for example, 1549 + ... + 2778.

It is an arithmetic number, because the mean of its divisors is an integer number (272664).

2^2661105 is an apocalyptic number.

It is an amenable number.

2661105 is a deficient number, since it is larger than the sum of its proper divisors (1701519).

2661105 is a wasteful number, since it uses less digits than its factorization.

2661105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4376.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 2661105 is about 1631.2893673411. The cubic root of 2661105 is about 138.5757816628.

Adding to 2661105 its reverse (5011662), we get a palindrome (7672767).

The spelling of 2661105 in words is "two million, six hundred sixty-one thousand, one hundred five".