11611611 has 24 divisors (see below), whose sum is σ = 18650736. Its totient is φ = 6901440.

The previous prime is 11611609. The next prime is 11611627.

11611611 is nontrivially palindromic in base 10.

11611611 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11611611 - 2¹ = 11611609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11611681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4141 + ... + 6353.

It is an arithmetic number, because the mean of its divisors is an integer number (777114).

Almost surely, 2^11611611 is an apocalyptic number.

11611611 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11611611 is a deficient number, since it is larger than the sum of its proper divisors (7039125).

11611611 is a wasteful number, since it uses less digits than its factorization.

11611611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2283 (or 2280 counting only the distinct ones).

The product of its digits is 36, while the sum is 18.

The square root of 11611611 is about 3407.5814003483. The cubic root of 11611611 is about 226.4457423068.

It can be divided in two parts, 1161 and 1611, that added together give a palindrome (2772).

The spelling of 11611611 in words is "eleven million, six hundred eleven thousand, six hundred eleven".