2611 has 4 divisors (see below), whose sum is σ = 2992. Its totient is φ = 2232.

The previous prime is 2609. The next prime is 2617. The reversal of 2611 is 1162.

2611 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 is a cyclic number.

It is not a de Polignac number, because 2611 - 2¹ = 2609 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a nialpdrome in base 15 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180 + ... + 193.

It is an arithmetic number, because the mean of its divisors is an integer number (748).

2611 is the 30-th hex number.

2611 is a deficient number, since it is larger than the sum of its proper divisors (381).

2611 is an equidigital number, since it uses as much as digits as its factorization.

2611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380.

The product of its digits is 12, while the sum is 10.

The square root of 2611 is about 51.0979451642. The cubic root of 2611 is about 13.7700533840.

Subtracting from 2611 its sum of digits (10), we obtain a square (2601 = 51²).

Adding to 2611 its reverse (1162), we get a palindrome (3773).

It can be divided in two parts, 261 and 1, that added together give a palindrome (262).

The spelling of 2611 in words is "two thousand, six hundred eleven".