13611061 has 2 divisors, whose sum is σ = 13611062. Its totient is φ = 13611060.

The previous prime is 13611053. The next prime is 13611083. The reversal of 13611061 is 16011631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8814961 + 4796100 = 2969^2 + 2190^2 .

It is a cyclic number.

It is not a de Polignac number, because 13611061 - 2³ = 13611053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13611041) 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 as a sum of consecutive naturals, namely, 6805530 + 6805531.

It is an arithmetic number, because the mean of its divisors is an integer number (6805531).

Almost surely, 2^13611061 is an apocalyptic number.

It is an amenable number.

13611061 is a deficient number, since it is larger than the sum of its proper divisors (1).

13611061 is an equidigital number, since it uses as much as digits as its factorization.

13611061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 13611061 is about 3689.3171454891. The cubic root of 13611061 is about 238.7613322107.

Adding to 13611061 its reverse (16011631), we get a palindrome (29622692).

The spelling of 13611061 in words is "thirteen million, six hundred eleven thousand, sixty-one".