2040655 has 4 divisors (see below), whose sum is σ = 2448792. Its totient is φ = 1632520.

The previous prime is 2040653. The next prime is 2040679. The reversal of 2040655 is 5560402.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2040655 - 2¹ = 2040653 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2040653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204061 + ... + 204070.

It is an arithmetic number, because the mean of its divisors is an integer number (612198).

2^2040655 is an apocalyptic number.

2040655 is a deficient number, since it is larger than the sum of its proper divisors (408137).

2040655 is an equidigital number, since it uses as much as digits as its factorization.

2040655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408136.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 2040655 is about 1428.5149631698. The cubic root of 2040655 is about 126.8400864079.

The spelling of 2040655 in words is "two million, forty thousand, six hundred fifty-five".