13611761 has 2 divisors, whose sum is σ = 13611762. Its totient is φ = 13611760.

The previous prime is 13611739. The next prime is 13611803. The reversal of 13611761 is 16711631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10601536 + 3010225 = 3256^2 + 1735^2 .

It is an emirp because it is prime and its reverse (16711631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13611761 - 2¹⁴ = 13595377 is a prime.

It is a super-2 number, since 2×13611761² = 370560075042242, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13611761.

It is not a weakly prime, because it can be changed into another prime (13611721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6805880 + 6805881.

It is an arithmetic number, because the mean of its divisors is an integer number (6805881).

Almost surely, 2^13611761 is an apocalyptic number.

It is an amenable number.

13611761 is a deficient number, since it is larger than the sum of its proper divisors (1).

13611761 is an equidigital number, since it uses as much as digits as its factorization.

13611761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 756, while the sum is 26.

The square root of 13611761 is about 3689.4120127739. The cubic root of 13611761 is about 238.7654252070.

The spelling of 13611761 in words is "thirteen million, six hundred eleven thousand, seven hundred sixty-one".